哺乳动物介绍【英文】
哺乳动物介绍 英文
Hello everyone! Today our group is going to give a presentation about mammals.As one of species evolves from late Jurassic period(侏罗纪晚期), mammalians’ brains are more developed and specialized than any other class of animals. Mammals are characterized by mammary glands(乳腺) that are modified for producing milk. All mammals have special sweat glands(汗腺) and hair.Here are five mammals we want to share with you:The first of are pandas. Panda is one of the most precious animals in the world. With white and black color, these animals are very fluffy and a little clumsy. Known as Chinese treasures, panda is a kind of animal that is endemic to China, they’re living in Sichuan province. Bamboo is their favorite food. Because of its cute appearance, panda is deep loved by the world public. 1961, WWF established its mark on the giant panda, the panda has become a symbol of the most important species conservation, also as a goodwill important representatives in the diplomatic activities in China.The second one is polar bear, the largest terrestrial carnivorous animal. The polar bear is a bear native largely within the Arctic Circle encompassing(围绕) the Arctic Ocean, its surrounding seas and surrounding land messes. It is the world’s largest land carnivore(食肉动物) and also the largest bear. It has thick fat and hair to stay warm, its white appearance on white snow is good protective coloration. It can move both on land and sea, thus it’s an advantage for a polar bear to catch food in such an extremely harsh climate. Nevertheless global warming has impact on the ice nowadays. The ice melts quickly in the two poles, which has a bad influence on polar bears. Their homes has been destroyed, the prey is also in reduction. We must take measures to protect these animals, for they’re in danger, they’re the treasure of nature.The third one is t he Roe Deer(狍子).The program of Dad, Where Are We Going has been very popular among many people, one of the period programs showed that these five pair fathers and children came to the northeast rural, and saw a cute animal——the roe deer, which make much more people aware of it. The roe deer is also called dwarf deer or wild sheep, which are herbivores(食草动物), feed on plants. The fur’s color of roe deer are usually straw yellow, there is white h aired in roe deer’s base of the tail, it looks really funny. In addition, the male roe deer have set of antlers(鹿角), but female roe deer don’t have, this is the way that how to recognize their sexes. The roe deer has very big and bright eyes, which makes it looks socuddly(可爱的). The roe deer almost live in open forest area, sometimes near the river valley. They rest in the forest during the day, take activities in the early morning or the late evening, because they are very timid and sensitive. they will run quickly if they finds you. As we know, there is one saying “Stupid Roe Deer” in the northeast area, it often be used to describe the people who is a little clumsy, and it’s gradually used to praise one person who is pretty and cute. But its own meaning is that the roe deer is so curious. When a hunter is chasing the roe deer, the roe deer will run very fast, but if the hunter stop to run after it, because of its curiosity, the roe deer will run back to the primary place to see what happened, the hunter do esn’t need or use great effort, then he can capture the roe deer very easily. How funny!The next one is Mongoose. Mongooses are primarily found in Africa, their range covering most of the continent. Some species occupy parts of southern Asia and the Iberian Peninsula. They are generally terrestrial mammals, but some are semi-aquatic, and others are at home inthe treetops. They normally have brown or gray fur, and a number of species sport striped(有条纹的) coats or ringed tails. Mongooses live in burrows(地洞) , feeding on small animals such as birds, frogs, insects, and worms. Some species supplement their diet with fruits, nuts, and seeds. Creative hunters, they are known to break open bird eggs by throwing them with their forepaws toward a solid object. Today effort has been done to control the number of this animal. As mongooses threaten the survival of various native species, particularly birds. However, in their natural environments, mongooses are currently threatened themselves due to habitat loss.The last one is sloth. Sloths are extremely slow-moving mammals found in the rainforest of Central and South America. There are two species of sloths: two-toed and three-toed. Most sloths are about the size of a small dog and they have short, flat heads. Their hair is grayish brown but, at times they look grey-green in color because they move so slowly that tiny algae grow all over their coats. Some sloths stay in the same tree for years. Their huge hooked claws and long arms allow them to spend most of their time hanging upside-down from trees. Since they have a slow metabolism(新陈代谢), they need very little food. They feed on fruit, leaves, buds, and young twigs(细枝). Sloths also sleep upside-down for up to 18 hours at a time. Mothers also give birth to babies upside-down. Babies cling to their mothers until they are able to take care of themselves. That’s all. Thank you!。
哺乳动物介绍 英文上课讲义
哺乳动物介绍英文Hello everyone! Today our group is going to give a presentation about mammals. As one of species evolves from late Jurassic period(侏罗纪晚期), mammalians’brains are more developed and specialized than any other class of animals. Mammals are characterized by mammary glands(乳腺) that are modified for producing milk. All mammals have special sweat glands(汗腺) and hair.Here are five mammals we want to share with you:The first of are pandas. Panda is one of the most precious animals in the world. With white and black color, these animals are very fluffy and a little clumsy. Known as Chinese treasures, panda is a kind of animal that is endemic to China, they’re living in Sichuan province. Bamboo is their favorite food. Because of its cute appearance, panda is deep loved by the world public. 1961, WWF established its mark on the giant panda, the panda has become a symbol of the most important species conservation, also as a goodwill important representatives in the diplomatic activities in China.The second one is polar bear, the largest terrestrial carnivorous animal. The polar bear is a bear native largely within the Arctic Circle encompassing(围绕) the Arctic Ocean, its surrounding seas and surrounding land messes. It is the world’s largest land carnivore(食肉动物) and also the largest bear. It has thick fat and hair to stay warm, its white appearance on white snow is good protective coloration. It can move both on land and sea, thus it’s an advantage for a polar bear to catch food in such an extremely harsh climate. Nevertheless global warming has impact on the ice nowadays. The ice melts quickly in the two poles, which has a bad influence on polar bears. Their homes has been destroyed, the prey is also in reduction. We must take measures to protect these animals, for they’re in danger, they’re the treasure of nature.The third one is t he Roe Deer(狍子).The program of Dad, Where Are We Going has been very popular among many people, one of the period programs showed that these five pair fathers and children came to the northeast rural, and saw a cute animal——the roe deer, which make much more people aware of it. The roe deer is also called dwarf deer or wild sheep, which are herbivores(食草动物), feed on plants. The fur’s color of roe deer are usually straw yellow,t here is white haired in roe deer’s base of the tail, it looks really funny. In addition, the male roe deer have set of antlers(鹿角), but female roe deer don’t have, this is the way that how to recognize their sexes. The roe deer has very big and bright eyes, which makes it looks socuddly(可爱的). The roe deer almost live in open forest area, sometimes near the river valley. They rest in the forest during the day, take activities in the early morning or the late evening, because they are very timid and sensitive. they will run quickly if they finds you. As we know, there is one saying “Stupid Roe Deer” in the northeast area, it often be used to describe the people who is a little clumsy, and it’s gradually used to praise one person who is pretty and cute. But its own meaning is that the roe deer is so curious. When a hunter is chasing the roe deer, theroe deer will run very fast, but if the hunter stop to run after it, because of its curiosity, the roe deer will run back to the primary place to see what happened, the hunter doesn’t need or use great effort, then he can capture the roe deer very easily. How funny!The next one is Mongoose. Mongooses are primarily found in Africa, their range covering most of the continent. Some species occupy parts of southern Asia and the Iberian Peninsula. They are generally terrestrial mammals, but some are semi-aquatic, and others are at home in the treetops. They normally have brown or gray fur, and a number of species sport striped(有条纹的) coats or ringed tails. Mongooses live inburrows(地洞) , feeding on small animals such as birds, frogs, insects, and worms. Some species supplement their diet with fruits, nuts, and seeds. Creative hunters, they are known to break open bird eggs by throwing them with their forepaws toward a solid object. Today effort has been done to control the number of this animal. As mongooses threaten the survival of various native species, particularly birds. However, in their natural environments, mongooses are currently threatened themselves due to habitat loss.The last one is sloth. Sloths are extremely slow-moving mammals found in the rainforest of Central and South America. There are two species of sloths: two-toed and three-toed. Most sloths are about the size of a small dog and they have short, flat heads. Their hair is grayish brown but, at times they look grey-green in color because they move so slowly that tiny algae grow all over their coats. Some sloths stay in the same tree for years. Their huge hooked claws and long arms allow them to spend most of their time hanging upside-down from trees. Since they have a slow metabolism(新陈代谢), they need very little food. They feed on fruit, leaves, buds, and youngtwigs(细枝). Sloths also sleep upside-down for up to 18 hours at a time. Mothers also give birth to babies upside-down. Babies cling to their mothers until they are able to take care of themselves.That’s all. Thank you!。
北极熊,英文介绍小作文
北极熊,英文介绍小作文英文回答：The polar bear, also known as the Ursus maritimus, is a large marine mammal native to the Arctic region. It is the largest species of bear and is well-adapted to the harshand icy environment of the Arctic. Polar bears have a thick layer of blubber and a dense fur coat that help themsurvive in the freezing temperatures.Polar bears are excellent swimmers and can swim forlong distances in search of food. They primarily feed on seals, which they catch by waiting near breathing holes in the ice or by ambushing them when they come up for air. Polar bears have a strong sense of smell, which helps them locate seals from a distance.These magnificent creatures have a unique hunting style. They are known to patiently wait at the edge of the ice, sometimes for hours, for a seal to appear. Once a seal isspotted, the polar bear uses its powerful front limbs to strike the seal and drag it out of the water. They can also catch seals by diving into the water from the ice.Polar bears are solitary animals and are highly territorial. They have a large home range, which can extend over hundreds of square miles. Male polar bears are knownto have a larger home range than females and often comeinto conflict with each other during the breeding season.Climate change poses a significant threat to the polar bear population. As the Arctic ice melts, polar bears lose their hunting grounds and are forced to swim longer distances in search of food. This can lead to exhaustionand starvation. Additionally, the melting ice reduces the availability of seals, which are the primary food sourcefor polar bears.中文回答：北极熊，也被称为海熊，是一种生活在北极地区的大型海洋哺乳动物。
介绍猪是哺乳动物作文英文
介绍猪是哺乳动物作文英文英文：Pigs are mammals that belong to the family Suidae and the genus Sus. They are domesticated animals that are commonly raised for meat, as well as for their skin and other by-products. Pigs are known for their intelligence and social behavior, and they are often kept in groups or herds on farms.Pigs have a reputation for being messy and dirty animals, but in reality, they are quite clean. They designate specific areas for sleeping, eating, and defecating, and they will not soil their living space if given the opportunity to keep it clean. In fact, pigs are often compared to humans in terms of their cleanliness and intelligence.In terms of their physical characteristics, pigs are known for their stout bodies, short legs, and snouts. Theyhave a keen sense of smell and are able to use their snouts to root around in the ground for food. Pigs are omnivores, which means they eat both plants and animals. They have a varied diet that includes grains, fruits, vegetables, and even small animals if given the opportunity.Pigs are also known for their reproductive capabilities, as they are able to produce large litters of piglets. A sow, or female pig, can have up to 12 piglets in a single litter, and they are known for being attentive and protective mothers.Overall, pigs are fascinating animals that play an important role in agriculture and food production. They are intelligent, social, and adaptable creatures that have been domesticated for thousands of years.中文：猪是哺乳动物，属于猪科和猪属。
哺乳动物英语词汇
哺乳动物英语词汇English:Mammals are a diverse group of animals characterized by several unique features. One key characteristic is the presence of mammary glands, which produce milk to nourish their young. Mammals are also distinguished by having hair or fur covering their bodies, which helps with insulation and protection. Another defining trait is the presence of a neocortex in the brain, which is responsible for higher cognitive functions such as problem-solving and social interaction. Mammals give birth to live young rather than laying eggs, and they typically exhibit parental care towards their offspring. This care can range from nursing and grooming to teaching essential life skills. Mammals inhabit various ecosystems worldwide, from the depths of the ocean to the highest mountains and everything in between. They have adapted to a wide range of diets, including herbivory, carnivory, and omnivory, making them incredibly versatile in their feeding habits. Mammals play vital roles in ecosystems as pollinators, seed dispersers, predators, and prey, contributing to the overall balance and functioning of their respective habitats. From the mighty blue whale to the tiny Etruscan shrew, mammals encompass anastonishing array of sizes, shapes, and behaviors, making them one of the most fascinating groups of animals on Earth.中文翻译:哺乳动物是一类具有多种独特特征的动物群体。
介绍猪是哺乳动物作文英语
介绍猪是哺乳动物作文英语Pigs are one of the most common and widespread domesticated animals in the world. They are classified as mammals, which means they are warm-blooded, have hair or fur, and give birth to live young. Pigs are also known as swine, hogs, or boars, depending on their species and gender.Pigs are found all over the world, from farms and ranches to the wild. They are highly adaptable and can thrive in a variety of environments, from forests and grasslands to deserts and wetlands. Pigs are omnivores, which means they eat both plants and animals. Their diet includes grass, roots, fruits, insects, and small animals like rodents and snakes. Pigs are also known for their love of mud, which helps them stay cool and protects their skin from the sun.Domesticated pigs are often raised for their meat, which is called pork. Pork is a popular food in manycultures and is used in a variety of dishes, from bacon and ham to sausages and barbecue. Pigs are also used for their fat, which is used to make lard, and their skin, which is used to make leather.Pigs are social animals and live in groups called sounders. Sounders are usually made up of females and their offspring, while males live separately in bachelor groups. Pigs communicate with each other through a variety of sounds, including grunts, squeals, and snorts. They arealso intelligent animals and have been trained to perform tricks and tasks, such as herding and sniffing out truffles.In conclusion, pigs are fascinating animals that have played an important role in human society for thousands of years. Whether as a source of food, leather, or companionship, pigs have proven to be versatile andvaluable creatures. As we continue to learn more aboutthese amazing animals, we can appreciate their unique qualities and contributions to our world.。
英语图文并茂介绍一种动物作文
英语图文并茂介绍一种动物作文英文回答：Elephants are the largest land-based mammals on Earth. They are herbivores that are native to Africa and Asia. Elephants are known for their long trunks, large ears, and thick skin. They are also very intelligent and social animals.There are two different species of elephants: the African elephant and the Asian elephant. African elephants are larger than Asian elephants, and they have larger ears. Asian elephants have smaller ears and a more rounded back.Elephants live in herds of up to 100 individuals. The herd is led by a matriarch, who is typically the oldest and largest female. Elephants are very social animals and they communicate with each other using a variety ofvocalizations and body language.Elephants are herbivores and they eat a variety of plants, including leaves, fruits, and roots. They are also known to eat bark and dirt. Elephants need to consume a lot of food each day, and they can spend up to 16 hours a day foraging for food.Elephants are pregnant for 22 months, which is the longest gestation period of any mammal. Calves are born blind and they weigh about 200 pounds. Calves stay with their mothers for several years, and they learn how to survive in the wild.Elephants are an important part of the ecosystem. They help to clear forests and they create watering holes that are used by other animals. Elephants are also a popular tourist attraction, and they are often featured in zoos and circuses.However, elephants are facing a number of threats, including habitat loss, poaching, and climate change. Habitat loss is the biggest threat to elephants, as it reduces the amount of food and water that is available tothem. Poaching is also a major problem, as elephants are killed for their ivory tusks. Climate change is also athreat to elephants, as it is causing changes in their habitat and food supply.Conservationists are working to protect elephants and their habitats. They are working to educate people aboutthe importance of elephants, and they are also working to reduce habitat loss and poaching.中文回答：大象是地球上最大的陆地哺乳动物。
英语哺乳动物科普作文
英语哺乳动物科普作文Title: Exploring the Fascinating World of Mammals。
Introduction:Mammals, a diverse class of animals, encompass a wide range of species, from the majestic elephant to the tiny shrew. In this essay, we will embark on a journey to explore the intriguing world of mammals, delving into their characteristics, habitats, and significance in the natural world.Characteristics of Mammals:Mammals are characterized by several unique features that distinguish them from other classes of animals. Firstly, all mammals possess mammary glands, which produce milk to nourish their young. This trait gives the class its name, "Mammalia." Additionally, mammals are endothermic, meaning they regulate their body temperature internally.This ability enables them to inhabit diverse environments ranging from polar regions to tropical rainforests.Another distinguishing feature of mammals is their hair or fur, which varies greatly in texture, color, and density among different species. Hair serves various functions, including insulation, camouflage, and sensory perception. Furthermore, mammals have specialized teeth adapted totheir dietary preferences, whether they are herbivores, carnivores, or omnivores.Habitats and Diversity:Mammals inhabit virtually every corner of the Earth, from the depths of oceans to the highest mountain peaks. They occupy diverse ecosystems, including forests, grasslands, deserts, and urban areas. This adaptability has contributed to the extraordinary diversity of mammalian species, which number over 6,000.Among the most iconic mammalian habitats are the African savannas, home to elephants, lions, and giraffes.In the Amazon rainforest, an unparalleled wealth of mammalian biodiversity thrives, including jaguars, sloths, and monkeys. From the Arctic tundra to the Australian outback, mammals have successfully colonized a vast array of environments through evolutionary adaptations.Significance in the Natural World:Mammals play crucial roles in ecosystem dynamics and are integral to the balance of natural communities. As herbivores, they influence plant populations through grazing and seed dispersal, shaping the structure of terrestrial landscapes. Predatory mammals help regulate prey populations, preventing overgrazing and promoting biodiversity.Moreover, mammals contribute to nutrient cycling and soil fertility through their activities, such as burrowing and waste deposition. In aquatic ecosystems, marine mammals like whales and dolphins play vital roles in nutrient transport and plankton regulation. Additionally, mammals serve as indicators of environmental health, reflectingchanges in habitat quality and ecosystem stability.Conservation Challenges:Despite their ecological importance, many mammalian species face numerous threats to their survival, primarily due to human activities. Habitat destruction, caused by deforestation, urbanization, and agricultural expansion, poses a significant threat to countless mammal populations worldwide. Climate change exacerbates these pressures, altering habitat suitability and disrupting ecological relationships.Furthermore, illegal wildlife trade, poaching, and hunting endanger numerous mammalian species, driving them towards extinction. Conservation efforts are essential to safeguarding vulnerable mammals and preserving biodiversity for future generations. Conservation initiatives include habitat restoration, protected area establishment, and community-based conservation projects aimed at promoting coexistence between humans and wildlife.Conclusion:In conclusion, mammals represent a remarkable and diverse group of animals that inhabit various ecosystems worldwide. Their unique characteristics, habitats, and ecological roles highlight their significance in the natural world. However, conservation challenges threaten many mammalian species, underscoring the urgency of concerted efforts to protect and preserve these extraordinary creatures for the benefit of ecosystems and humanity as a whole.。
关于海豚的中英文介绍外教
关于海豚的中英文介绍外教Let me introduce you to dolphins, one of the most fascinating creatures of the sea.让我来介绍一下海豚，它是海洋中最迷人的生物之一。
Dolphins are mammals and are found all over the world, living in both saltwater and freshwater habitats.海豚是哺乳动物，分布在全球各地，生活在咸淡水栖息地中。
They are highly intelligent and social animals, often living in groups called pods.它们非常聪明和社交化，通常生活在称为“群体”的团体中。
Dolphins are known for their playful behavior and acrobatic abilities, such as jumping out of the water and somersaulting.海豚因其活泼的行为和杂技表演而闻名，例如跳出水面和翻滚。
They communicate with each other through a series of clicks, whistles, and body language.它们通过一系列的“点击”声、哨声和身体语言来彼此交流。
There are over 40 different species of dolphins, ranging in sizefrom 3 feet to over 30 feet long.海豚有超过40个不同的物种，大小从3英尺到30英尺以上不等。
They are apex predators and feed on a variety of marine creatures such as small fish, squid, and shrimp.它们是顶级捕食者，以各种海洋生物为食，如小鱼、鱿鱼和虾。
哺乳动物的特点英语作文
哺乳动物的特点英语作文英文回答：As a mammal, I possess a unique set of characteristics that distinguish me from other animal classes. One of my most defining features is my ability to produce milk to feed my young. This nourishment provides my offspring with essential nutrients for their growth and development.Another hallmark of my mammalian status is the presence of fur or hair. This insulating layer serves as protection from the elements, helping me maintain a constant body temperature. It also provides camouflage, aiding in my survival amidst diverse environments.My body plan is also a testament to my mammalian heritage. As a warm-blooded animal, my internal body temperature is largely unaffected by external conditions. This allows me to remain active and maintain a high metabolic rate regardless of the surrounding climate.Moreover, my respiratory system is highly efficient. I possess a diaphragm, a muscular partition that separates my thoracic cavity from my abdominal cavity. This muscle plays a pivotal role in breathing, enabling me to take in large amounts of oxygen, which is essential for my energy production.My circulatory system is also well-developed. As a mammal, I have a four-chambered heart that pumps oxygenated blood throughout my body. This ensures that all my organs and tissues receive the vital nutrients they need to function properly.In terms of reproduction, I am a viviparous animal. This means that I give birth to live young rather than laying eggs. My offspring develop within a uterus, where they receive nourishment and protection until they are ready to be born.中文回答：作为一个哺乳动物，我拥有独特的一系列特征，将我从其他动物类别中区别开来。
介绍一种哺乳动物英语作文
介绍一种哺乳动物英语作文Here is an essay about a mammal in English:Mammals are a diverse group of vertebrate animals that are characterized by the presence of hair, the ability to produce milk to feed their young, and the possession of specialized teeth. One fascinating mammal species is the polar bear (Ursus maritimus). Native to the Arctic region, the polar bear is the largest living land carnivore, with adult males weighing up to 1,500 pounds.Polar bears are well-adapted to the harsh Arctic environment. Their thick, insulating fur coat and a layer of fat beneath the skin help them to retain body heat and survive the frigid temperatures of the Arctic. Their large, partially webbed paws act as snowshoes, allowing them to move easily across the ice and snow. Polar bears are also excellent swimmers, using their front paws to propel themselves through the water in search of their primary prey: seals.Seals make up the majority of a polar bear's diet, with ringed seals (Pusa hispida) and bearded seals (Erignathusbarbatus) being their preferred sources of food. Polar bears will also consume other marine life, such as fish, birds, and even the occasional whale carcass. Their hunting strategy involves waiting patiently at seal breathing holes or seal pupping lairs, or stalking and ambushing seals on the ice.One of the most remarkable adaptations of the polar bear is its ability to go for extended periods without food. During the summer months, when sea ice melts and seals become more difficult to find, polar bears may fast for several weeks or even months. They are able to do this by entering a state of "walking hibernation," where their metabolism slows down, and they conserve energy by resting and moving less.Sadly, the polar bear's future is under threat due to the effects of climate change. As the Arctic region warms and sea ice melts at an alarming rate, polar bears are finding it increasingly difficult to find and catch their seal prey. This has led to a decline in their population, with the International Union for Conservation of Nature (IUCN) listing the polar bear as a "vulnerable" species.Conservation efforts are underway to protect the polar bear and its Arctic habitat. This includes measures to reduce greenhouse gas emissions, establish protected areas, and limit human activities that may disturb or harm polar bears. Additionally, research is being conducted to better understand the impacts of climate change on polar bears and to develop strategies for their long-term survival.In conclusion, the polar bear is a remarkable and captivating mammal that is adapted to the harsh Arctic environment. However, the species is facing significant challenges due to the effects of climate change, and it is crucial that we take action to protect this iconic animal and its fragile ecosystem.现在用中文总结一下:极地熊是一种非常独特的哺乳动物。
用英语介绍奶牛5句话
用英语介绍奶牛5句话
奶牛是一种常见的草食性哺乳动物，被广泛饲养用于生产牛奶和
肉类。
以下是用英语介绍奶牛的五句话：
1. Cows are domesticated animals that are primarily
raised for their milk production.
奶牛是被驯化的家畜，主要饲养以供给牛奶产量。
2. They belong to the bovine family and are known for
their gentle nature and large size.
它们属于牛科，以温顺的性格和巨大的体型而闻名。
3. The milk produced by cows is a vital source of
nutrition for humans and is used in various dairy products.
奶牛产生的牛奶是人类重要的营养来源，用于制作各种乳制品。
4. Cows have unique digestive systems that allow them to efficiently convert plant matter into milk.
奶牛拥有独特的消化系统，可以高效地将植物物质转化为牛奶。
5. Breeds of cows vary in terms of milk production, temperament, and physical characteristics.
奶牛的品种在产奶量、性情和外貌特征上存在差异。
以上是关于奶牛的五句话介绍，希望能够对你了解奶牛有所帮助。
用十句话介绍羊英语
用十句话介绍羊英语以下是十句关于羊的英文介绍以及对应的中文翻译：1.Sheep are a species of domesticated mammal, typically raised fortheir wool, meat, and milk.中文翻译：羊是一种被驯化的哺乳动物，通常被饲养用于获取羊毛、羊肉和羊奶。
2.They are social animals and often graze together in flocks.中文翻译：羊是群居动物，经常成群结队地一起放牧。
3.Sheep are known for their docile and gentle nature, making themeasy to care for.中文翻译：羊以温顺和温和的天性而闻名，使得它们易于照料。
4.The wool from sheep is used in a variety of textiles, including clothing,blankets, and rugs.中文翻译：羊毛被用于制作各种纺织品，包括衣服、毯子和地毯。
mb, the meat of young sheep, is a popular dish in many culturesand is often served roasted or grilled.中文翻译：羊肉，即小羊羔的肉，在许多文化中是一道受欢迎的菜肴，经常被烤或烧烤后食用。
6.Sheep's milk is used to make a variety of dairy products, includingcheese, yogurt, and ice cream.中文翻译：羊奶被用来制作各种乳制品，包括奶酪、酸奶和冰淇淋。
7.Sheep are sheared regularly to remove their wool, which growscontinuously.中文翻译：羊需要定期剪毛，因为它们的羊毛会持续生长。
白鳍豚介绍英文介绍作文
白鳍豚介绍英文介绍作文英文：White dolphins, also known as Chinese white dolphins, are a species of marine mammals that belong to the family Delphinidae. They are found in the waters of the Pacific and Indian Oceans, as well as in the South China Sea. These dolphins are known for their distinctive white coloration, which is most prominent in adult males.White dolphins are highly intelligent animals and are known to be very social. They often travel in groups, or pods, and communicate with each other using a variety of vocalizations. They are also known for their playful behavior, often leaping out of the water and riding the waves created by boats.Unfortunately, white dolphins are currently facing a number of threats, including habitat loss, pollution, and overfishing. In some areas, they are also hunted for theirmeat and oil. As a result, their populations have declined significantly in recent years, and they are now consideredto be a vulnerable species.中文：白鳍豚，也被称为中华白海豚，是属于海豚科的一种海洋哺乳动物。
宽吻海豚外形英文简单介绍
宽吻海豚外形英文简单介绍
The Atlantic bottlenose dolphin, commonly known as the common bottlenose dolphin, is a marine mammal belonging to the family Delphinidae. It has a robust body with a long snout and a curved mouth, giving it a characteristic smile-like appearance. The coloration of the bottlenose dolphin can vary, but most individuals have a dark gray back, a lighter gray or white belly, and a distinctively curved dorsal fin on their back.
宽吻海豚（Atlantic bottlenose dolphin），又称普通宽吻海豚，是一种属于鲸目海豚科的海洋哺乳动物。
它们有着粗壮的身体，长而尖的吻和弯曲的嘴巴，给人一种笑容般的特殊外观。
宽吻海豚的颜色有所变化，但大多数个体背部呈深灰色，腹部为较浅的灰色或白色，并在背部拥有一个独特弯曲的背鳍。
哺乳动物英语单词
哺乳动物英语单词1. Mammal - noun. Any warm-blooded animal of the class Mammalia, distinguished by the possession of hair or fur, nursing young with milk from mammary glands, and usuallygiving birth to live young.Example sentence: Some examples of mammals include humans, dogs, cats, whales, and elephants.双语例句：哺乳动物的一些例子包括人类、狗、猫、鲸鱼和大象。
2. Carnivore - noun. A meat-eating mammal.Example sentence: Examples of carnivores include lions, tigers, wolves, and sharks.双语例句：肉食动物的例子包括狮子、老虎、狼和鲨鱼。
3. Herbivore - noun. A plant-eating mammal.Example sentence: Some examples of herbivores include cows, horses, giraffes, and deer.双语例句：草食动物的一些例子包括牛、马、长颈鹿和鹿。
4. Omnivore - noun. An animal that eats both plants and meat.Example sentence: Examples of omnivores include bears, raccoons, and humans.双语例句：杂食动物的例子包括熊、浣熊和人类。
5. Predator - noun. An animal that hunts and kills other animals for food.Example sentence: Some examples of predators include lions, snakes, and eagles.双语例句：猎食者的一些例子包括狮子、蛇和鹰。
哺乳动物英文单词
哺乳动物英文单词一、哺乳动物英文单词1. Cat（猫）2. Fox（狐狸）3. Raccoon（浣熊）4. Sheep（绵羊）5. Bear（熊）6. Rabbit（兔子）7. Mouse（鼠）8. Deer（鹿）9. Gorilla（大猩猩）10. Goat（山羊）哺乳动物是对任何一种以乳汁哺育后代的动物的统称，包括哺乳纲的550种以上物种，比如猫、狐狸、浣熊、绵羊、熊、兔子、鼠、鹿、大猩猩和山羊等。
首先，让我们来看看猫。
猫是具有独特性格和外表的哺乳动物，也是不少家庭的最爱，在家养猫不仅能够给我们带来愉悦，还有它很棒的猎兽本能。
不过，它们也许会因为经常攀爬而弄脏家里的家具，或者把家里的某些东西吃掉。
接下来，是狐狸。
狐狸是一种小型动物，它有着漂亮的棕色皮毛和小灵敏的耳朵，是它及其家庭的标志。
它们被认为是机灵狡猾的动物，善于面对挑战和顽固。
它们有时也被误认为是小偷，因为它们非常喜欢偷吃人们的食物。
随后，是浣熊。
浣熊是一种非常机灵和活泼的哺乳动物，它们喜欢吃树果和野果，特别喜欢在晚上爬树和活动。
浣熊被称为家庭的“小小破坏者”，因为它们有时偷偷摸摸地进入人们的家园，导致家里的一些东西受损。
绵羊是另一种有趣的哺乳动物。
绵羊们大多是温顺的，他们经常被当作家庭宠物，被认为是温和而温驯的动物。
绵羊很容易养活，并且可以收集跑步时产生的羊毛。
另外，它们也可以用来种植时做牧群动物，因为它们在种植时能够驱散小动物，保护作物不受害。
接下来，是熊。
熊是一种大型动物，有着坚韧的体魄和锋利的牙齿。
它们对于寒冷的环境特别习惯，通常可以在森林里找到。
熊们非常可爱，也是家庭的最爱，虽然有时也会有一些吓人的瞬间，但他们的存在绝对是森林的一种精神支撑。
兔子也是哺乳动物中的一种，它们是活泼可爱的小动物，可爱的外表让不少人忍不住把它们带回家养。
但家养兔子也有特殊条件，它们很容易饿死，因此需要主人做到定期喂养并加以关注。
同样可爱的小动物还有鼠。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Order Tubulidentata
Order Pholidota
Order Xenartha
Hyrax
Order Hyracoidea
Mammalian Integument & Glands
• • • • Sebaceous Sweat Scent Mammary
Mammary Glands
Fur
• Pelage
– Underhair – Guard hairs
• 1 or 2 molts/yr
Horns
Antlers
Mammal Skull
Formation of a Hard Palate
Skull Diversification
Dentition
• 2 sets
– Milk teeth (deciduous) – Permanent teeth
• Rodents & lagomorphs
– Teeth continuously grow
Carnivore Digestive Tracts
Herbivore Digestive Tracts
ቤተ መጻሕፍቲ ባይዱ
Migratory Land Mammals
Migratory Sea Mammals
Sonar
Marsupial Reproductive Cycles
Gestational & Lactational Differences between Marsupials & Mammals
Gestation Periods • Large mammals (herbivores)
– Longer gestations – Precocial newborns
• Class Mammalia
– Subclass Theria
• Infraclass Eutheria
– – – – – – – – – – – Order Rodentia Order Chiroptera Order Insectavora Order Carnivora Order Primates Order Artiodactyla Order Lagomorpha Order Cetacea Order Perissodactyla Order Sirenia Order Proboscidea
Mammalian Reproduction Modes
• Prototherians (monotremes)
– Oviparous – Hatchlings mature in pouch and suckle from mammary gland
• Metatherians (marsupials)
• Multiple ovulation periods per year
• Menstrual cycle
– Estrus followed by menstruation – Shedding of uterine lining – Only in humans, apes, & old world monkeys
– Vivparous – Very immature young mature in pouch and suckle from mammary gland
• Eutherian (placentals)
– Vivaparous – Precocial & altricial young – Suckle young
Class Mammalia
Mammal Taxonomy
• Class Mammalia
– Subclass Prototheria
– Order Monotremata spiny echidna Tachyglossus aculeatus
duckbilled platypus Ornithorhynchus anitinus long beaked echidna Zaglosssus bruijni
Mammal Taxonomy
• Class Mammalia
– Subclass Theria
• Infraclass Metatheria
– Order Marsupialia Koala
Possum
Didelphis virginiana
Kangaroo
Tazmanian Devil
Mammal Taxonomy
• Small insectivores, rodents, carnivores
– Shorter gestations – Altricial newborns
• Sightless • Hairless
Domestication
Prosimian Primates
Hominidae
Human Taxonomy
Kingdom Animalia Phylum Chordata Subphylum Vertebrata Class Mammalia Order Primates Family Hominidae Genus Homo Species sapiens
Human Ancesteral Lineages
Reproductive Cycles • Estrous cycle
– Time of ovulation following a peak in estrogen production (estrus) – Monestrous
• 1 ovulation period per year
– Polyestrous