0英语野生动物作文（20篇）
《瓦尔登湖》是美国作家梭罗独居瓦尔登湖畔的记录，描绘了他两年多时间里的所见、所闻和所思。看完这本书后就来看看小编整理的英语读后感吧。
浏览
7882作文
427宠物动物的英语
全文共 1436 字
+ 加入清单There is no denying the fact that keeping pets is a hotly debated topic today. Some people claim that keeping pets is a good thing to do. They believe that pets, like cats and dogs, can help relieve the loneliness suffered by senior citizens and other social members who are confined to their homes for this reason or that. They also argue that keeping pets helps mankind understand animals world and develop positive feelings toward them.
有一个不可否认的事实，即养宠物是当今一个被热烈讨论的话题。有的人认为养宠物是一件好事。他们认为宠物，比如猫和狗，有助于缓解年长者和那些由于这样那样的家庭原因限制的社会成员的孤独感。他们还认为，养宠物有助于人类了解动物世界，培养对它们的积极态度。
Others, however, hold the opposite view. They regard keeping pets as a useless but harmful thing to do. Firstly, pets can transmit diseases. Secondly, the noises and dung of pets are sources of pollution. Last but not least, as many rare birds and animals are kept as pets, they will surely be hunted on a large scale, which means a threat to the balance of the ecosystem.
然而，其他人持相反观点。他把养宠物当做是无用而且有害的事。首先，宠物可以传播疾病。其次，噪音和宠物粪便是污染的来源。最后，许多珍禽异兽作为宠物饲养，他们一定会被大规模猎杀，这意味着威胁到生态系统的平衡。
Weighing the arguments of both sides, I am inclined to agree with the latter. Anyway, we can lessen our loneliness and express our love toward animals in other ways. And it is my beliefs that only by placing man and other species on an equal basis can us expect to have a lively and colorful world.
权衡双方的论据，我更倾向于同意后者。不管怎么样，我们可以通过其他方式来减少我们的孤独和向动物表达我们的爱心。我相信，只有在人类和其他物种平等的基础上，我们才能期待有一个生动多彩的世界。
[关于宠物动物的英语作文
更多相似作文
篇1：介绍动物猫的英语
全文共 498 字
+ 加入清单I have got two baby cats. they are very beautiful.
One is yellow. the other is white. they are very lovely. the yellow cat is very naughty. He likes to play with people. He often runs here and there. His favourite game is playing with balls, ropes and stones.
But the white cat is very gentle. She likes to wash her face.
And she doesn′t like to play with people. She often jumps onto my knees. I like to give her a bath.
Oh, my baby cats bring me much happiness. We are very good friends. I love them.
篇2：小学英语作文动物
全文共 406 字
+ 加入清单I like animals very much. I have a dog, It’s my favourite animal. It’s white, It looks like a snow ball. It has two big eyes and ears. But its nose and mouth are very small. It’s very naughty.
It often stares at my food when I have a meal. When I’m home it follows me all the time.
When I do my homework, it often sits beside quietly, but sometimes runs around me and shouts: wom wom.
I like my dog very much.
篇3：描写小动物英语作文80字
全文共 1367 字
+ 加入清单One day, the fawn to another forest to take a walk. The fawn surprised to think: "hey, how do the trees here only the stumps, become bare?" Suddenly, the deer heard a cry, and it went down crying, the original small animals in the forest near the stump cry, cry very sad!
The deer walks to the small animals and ask: "why are you crying?" Little monkey and said: "the trees here grow CongCongLongLong, the branch is very tall and straight, we can free to play, play in the branches, now trees are being cut off, we didnt play place, let us how sport?" The words sound just fell, the small white rabbit said: "before we have the green grass, now has been cut off, havent got the fresh mushrooms on the grass, we have no food, how life ah!" At this moment, the bird to fly, said: "before the branches is our home, but now the branches have no, were homeless, told us how to live!"
Fawn looked up at the sky and prayed silently: "human! You dont hurt them, to help them quickly! Give them a happy peaceful home!"
有一天，小鹿到了另一个森林来散步。小鹿惊奇地想：“咦，这儿的树木怎么只有树桩，变得光秃秃的呢?”突然，小鹿听到一阵哭声，它顺着哭声走过去，原来森林里的小动物们在树桩旁哭泣，哭得可伤心了!
小鹿走到小动物们身旁，问：“你们为什么哭泣呀?”小猴说：“原来这儿的树木长得葱葱茏茏的，树枝很挺拔，我们就在树枝上自由自在地嬉戏、玩耍，可现在树木都被人们砍断了，我们没有嬉戏的地方了，让我们怎么运动呢?”话音刚落，小白兔说：“以前我们有绿油油的草地，现在被人们割掉了，草地上鲜嫩的蘑菇也没有了，我们没有了食物，怎么生活呀!”这时，小鸟飞来了，说：“以前树枝是我们的家，可现在树枝没有了，我们无家可归了，叫我们怎么活得下去啊!”
小鹿仰望着天空，默默地祈祷：“人类啊!你们不要再伤害它们了，快去帮助它们吧!还给它们一个幸福安宁的家园吧!”
篇4：保护野生动物作文400字
全文共 440 字
+ 加入清单“咩——咩——”在这个世界中，动物们都和平共处，可爱的山羊、忠厚老实的老牛、机灵的松鼠、改荤为素的狼、改邪归正的狐狸，它们经常一起玩，一起吃饭，甚至还住在一起，这个世界的人类非常和善，乐于助人，经常和动物打交道，所以，没有人吃肉，没有人杀戮。真是一个美好的世界，一个健康的世界，一个和平的世界啊！
现在这个世界，是一个臭名远扬的屠杀世界，所有动物都很凶残，就连平时跟你玩耍的小兔子，也开始食荤、杀戮。人类就更不用说了：他们嗜血、残暴，经常杀害动物，动不动就发起一场战争，闹得别人死得死，伤得伤，没有一天过得安稳，没有一天没有喊杀声，也没有一天能和平。
你们想将地球变成什么样？是和平的世界？还是杀戮的世界？不用说，你们肯定想把地球变成和平的世界吧！怎么才能把地球变成一个和平的世界呢？首先，同学们应该先做好自己，珍惜每一个生命：一只动物、一朵花、一棵树、一棵草。
和平不只是想像，只要每一个人做好自己，多关心野生动物，多保护野生动物，总有一天，我们人类和动物和平共处的梦想一定会实现的。
篇5：保护野生动物感悟作文
全文共 432 字
+ 加入清单世界上有成千上万的野生动物，它们都是我们人类的朋友，我们应该要保护它们，关爱它们，不要伤害它们。我相信我们对它们友好，它们也一样会对我们很友好的。
比如说燕子，燕子能帮我们把田里的害虫吃掉。如果我们人类杀害捕捉它们，它们会吃掉那些常常来搔扰我们的蚊子，让我们更好地生活吗 没有了燕子，我们的周围变得很多害虫，这些害虫对我们人类有很大的坏处呀!
比如说青蛙，青蛙也能帮我们吃田里的害虫，可以说是田里的警察。我们支捕杀他们，一旦没有了青蛙，田里的害虫越来越多，害虫不断地吃菜，难道我们会有美好的丰收吗?
比如说啄木鸟，啄木鸟是森林中的医生，它可以帮我们吃掉树里的害虫，让树恢复健康。我们杀害它们，树木的害虫会越来越多，树木会慢慢地减少。地球上没有树，会发洪水、地震。
比如说猫头鹰，猫头鹰捉田鼠，是对我们人类有好处的，人类却常常捕猎它们。没有猫头鹰，田鼠会增加。田鼠吃的庄稼和菜就更多了，我们人类一样没有好的收成。
所以，我们要保护以上的动物。同时，我们还要保护其他的野生动物!
篇6：英语我最新喜欢的动物——小狗
全文共 654 字
+ 加入清单My favourite animal is the dog.They are so cute ,and are our honest friend.
We have a dog with grey furs and black eyes called Wangwang. Wangwang likes eating.My mother said that hes as greedy as I am.When we are having dinners,he usually crouches (蹲)in the face of us and looks at our food with hungry eyes . At that moment,I always cant help throwing the food in my mouth to him.
Every afternoon when i come back home from shool,Wangwang often runs to me and hug my legs.Hes so happy to see me back.When Im free ,I usually take him to play outside. We run in the field in Spring ,and swim in the river in Summer.Hes my best friend.
I love my dog—Wangwang.
篇7：英语作文保护珍稀动物
全文共 1565 字
+ 加入清单Animals Need Protecting
It is suggested that people have been aware of the issue--lack of preservation for endangered spieces, animals and plants, but as you see , they placed little efforts to cope with the problem.despite the versatility and intricacy of instruments , I would pore over some of the most striking ones and offer alternatives afterwards.
One of the major reasons , causing peoples inocence of protecting animals, is that the government did not function well as an educator, arosing peoples initiative in shielding wild animals, which led to the consequence that people do not know their responsibility to prevent animals from dangers, and specific knowledge in guarding them. what is equally important as the reason mentioned above is that media did not meet our satisfaction to inform the mass of the emergency which is crutial in arousing peoples conciousness to keep animals safe.
In spite of the serious problem, measure leading to profound improvement still can be taken. owning to the fact that funds are insufficient in some developing countries, developed countries or international organizations should shoulder more burden -- finacing them in order to capacitate them to accompolish the protection of animals. at the same time, education in telling people the way to make animals harboured ought to be focused on, thus resulting in peoples better awareness in the camouflage of our pla#from cutest creatures.
It is belived by me that if correct actions are taken to preserve animals, any kind of them will be far away from extinction forever.
篇8：保护动物的英语
全文共 748 字
+ 加入清单First should realize the importance of protecting endangered animals， to protect endangered animals and habitats， to promote the wildlife conservation and management of the laws and regulations 首要就应认识保护濒危动物的重要性，自觉保护濒危动物及其栖息环境，主动向亲友宣传野生动物保护管理的法律法规。 Second is to use the source of the endangered animals and do not eat， no， not keeping the source of the endangered animals or products， especially in the wild birds， turtles snakes and class 其次是拒绝利用野外来源的濒危动物，做到不吃、不用、不养野外来源的濒危动物或其产品，尤其是野生鸟类、蛇类和龟鳖类。 Last to be destroyed resolutely expose animal resources of the offence， for many endangered animal protection department or unit or fat， with the support of the animal protection administration 最后要坚决揭发破坏濒危动物资源的不法行为，用心为濒危动物保护部门或单位献计献策或捐资捐款，支持濒危动物保护管理工作。
篇9：关于动物的英语作文
全文共 641 字
+ 加入清单Panda is one of the scarcest animals. People in the world like it very much. there used to be many pandas in China long ago. As the balance of nature was destroyed and the weather was getting warmer and warmer, pandas became less. But at present, the number of pandas is increasing year by year. there are now so many pandas that some are being sent to other countries so that people there can enjoy them.
Nowadays, the biggest nature park for panda in China is in Sichuan. there is a research centre for nature and wild life there. Scientists hope that one day they will have enough pandas to be set free and let them live in the wild again.
篇10：动物英语作文带翻译
全文共 869 字
+ 加入清单Dolphin
In the vast ocean live many creatures with great intellectual and physical capacities.Dolphin is one of those great creatures,whose capacities to think and move at an astounding rate puzzle those who study their behaviors,Dolphins possess something that makes them different from all the other sea creatures.It is not strength or speed but the size of their brains.Dolphin s brain is almost the same size as that found in the human head.They live for a ling time.
Dolphins babies are born in the water.They can grow up to three and a half meters long.
Dolopins use sound to help them find their way,look for their food and talk with each other.Sound is just like their eyes and mouths.
海豚
大海里住着许多智力发达、身体强健的动物,海豚就是其中之一.它反应灵敏、动作迅速,让那些研究它们行为的人们深感震惊.海豚拥有一些与其它海洋生物不同的地方,它的优势不在于它的力量和速度,而在于它的大脑.海豚的大脑与人脑大小一样大.它们的寿命很长.海豚在水里生育,它们能长到三点五米长.
海豚利用声音帮助自己认路、觅食与彼此之间交谈.声音就像它们的眼睛和嘴一样.
篇11：关于保护动物的小学生英语作文
全文共 709 字
+ 加入清单Animals are our best friends. But there are many bad things about them. So we should try our best to protect animals.
First, let us know the status of the animal. Now, animals are facing very great danger. For example, there are many kinds of animals will die out. And there are many people eat precious and wild animals. They are nasty. As students, we should stop this behavior and protect animals.
Then, let us know we should how to protect animals. We should protect they habitat. If you see other people mindlessly trample animal homes, nicely remind them of the damage theyre causing. We can not also eat some wild animals. We should ask other people to protect them, too. Let we protect animals together!
篇12：我喜欢的小动物英语作文
全文共 1140 字
+ 加入清单I like the small animal is a puppy, it whole body covered with a white hair, like a regiment cotton candy; The eyes are the YuanLiuLiu, like two gem; Ear is a semicircle, nose is black, short tail, very lovely.
我喜欢的小动物是一只小狗，它全身长满白色的毛，像一团棉花糖;眼睛是圆溜溜的，像两颗宝石;耳朵是半圆形，鼻子是黑色的，短短的尾巴，非常可爱。
I give it to love to eat, it will be the bones of a piece of a piece, a short for a short to chew. It finished eating bones, will call a few barks
我给它爱吃的，它会一块一块骨头，一小段一小段咀嚼。它啃完骨头后，将调用一些树皮
Sound, as if to say: "small host, thank you." Whenever I go to school, she will always give me a journey, until I pretended to be angry, hit it two or three it quietly ran home. It will not only send me to school, also like and I together race, run very quickly, sometimes, I fell a journey. At ordinary times, it looks very timid, but saw the stranger, but do not break again fierce with his eyes wide open to tight stared at the strangers every move, the key when still can call out,
的声音，好像在说：“小主人，谢谢你。”每当我去上学，她总是会给我一个旅程，直到我假装生气，打了两个或三个它悄悄地跑回家。它不但会送我去上学，还喜欢和我一起赛跑，跑得很快，有时，我觉得一个旅程。平时，它看起来很胆小，但看到的陌生人，但又不失猛睁大眼睛紧紧地盯着陌生人的一举一动，关键时还可以呼叫，
It was a clever and loyal dog!
一个聪明的和忠诚的狗，它是!
篇13：保护野生动物
全文共 368 字
+ 加入清单动物与我们人类一样，有思想，有感情，也有它们自己的生活方式，更有自由权。
我们不应该去破坏他们安详和谐的生活，我们也无权去破坏他们的生活，当然，更没有理由去指责伤害他们。
每当我们的饭桌旁摆上一道道香喷喷的菜，比如：蛇、青蛙、等动物。我们是不是应该想一想，我们每吃一种动物，就等于放走了多少对农民对庄家有害的虫。我们更是不是也应该换位思考一下，它们都在齐心协力的抓害虫，可人类不但不领情，反而把它们当做他们的食物，当作我们人类每天赚钱的东西，他们是多么可恶呀!
如今，地球上的许多生物已经很罕见了，甚至有的已经濒临灭绝了!如果地球上没有了动物，地球将会变成什么样，人类又将会变成什么样?
我想，是我们人类好好反省的时候了，如果再这样下去的话，我们将会成为动物们的敌人了，更别谈什么“与狼共舞”
篇14：保护动物的英语作文
全文共 1820 字
+ 加入清单One Sunday afternoon, I casually adjust the TV channel. All of a sudden, disastrous scene into my line of sight: a peasant who was holding a piece of iron hammer, turned out to be a butcher is a not how big head of pig slaughter.
I saw all this. Found that pigs fate was so miserable! Is this fate arranged? Or pigs caused by past delicious lazy? I found the "people" are so cruel. Oneself have so long pig, cruel to kill it. Ah, I found that at the moment I was so sad, so sad, so lost, so helpless. In nature there are many more miserable than this things are happening, perhaps this is fate, it is inevitable in the growing of a test.
Not often say that animals are friends of human beings? Not often say that people for the ethical treatment of animals, protect the earth? Maybe this is just for those rare animals! Those animals that almost nearly perish! Pigs in a country of the world, one city, a town, a village, or even a home, a person can see. Pigs are a lot of, is not worth to treat? Pig also is to have life, and human beings, it also know pain, also have feelings, also know how sad. People for the ethical treatment of animals! The animals as their friends, for they give a little love!
Animals are friends of human beings, like humans, are the people of the earth. Let us hands reach out, to protect, to help those who need help human friends!
一个周日的下午，我漫不经心地调着电视频道。突然，惨不忍睹的一幕进入我的视线：一个农民模样的人正拿着一根铁棍敲打什么，原来是一群屠夫正在屠杀一头不怎么大的小猪。
我亲眼目睹了这一切。发现猪的命运竟是这么悲惨!难道这是命运安排好的吗?还是猪前世的好吃懒惰造成的?我发现“人”竟是那么狠心。自己养了这么长时间的猪，竟然狠心杀掉它。哎，我发现此刻自己竟是那么的伤心，那么的悲痛，那么的迷惘，那么的无奈。大自然中还有很多比这更悲惨的事情正在发生，或许这就是命运，这就是在成长中不可避免的一次考试。
不是常说动物是人类的朋友吗?不是常说善待动物，保护地球的吗?可能这只是针对那些稀有的动物罢了!那些几乎将近灭亡的动物罢了!猪在世界的某个国家，某个城市，某个城镇，某个村庄，甚至某家某户都可以见到。猪是很多，多到不值得善待?猪也是有生命的，和人类一样，它也知道痛，也有感情，也懂得伤心。善待动物吧!把动物当成自己朋友，对它们付出一点爱吧!
动物是人类的朋友，同人类一样，都是地球的子民。让我们伸出双手，去保护，去帮助那些需要帮助的人类的朋友吧!
篇15：保护动物的英语作文带翻译
全文共 1147 字
+ 加入清单Many animals are in danger of dying out. As is clearly shown in the bar chart, the kinds of wild animals have decreased sharply in the past decades. With 30,000 wild animals reduced on average each year, there were only 1.5 million left till 2010.
There are several reasons accounting for this problem. Apart from the polluted environment and natural disasters, illegal killing is an important reason. Human beings are making attempts to hunt wild animals for fashion and a big profit, which can be seen vividly from the right picture. This has resulted in a sharp decrease in the number of animals.
In my opinion, it is high time for us to take quick action to protect them. A national public campaign should be launched to give animals a good living environment. In addition, the government should pass some firm laws to forbid abuse killing. Only in this way can we live in harmony with wild animals.
许多动物都面临灭绝的危险。显然这个柱状图所示,野生动物的种类急剧下降在过去的几十年。每年平均30000野生动物减少,只剩下150万到2010。
占这个问题有几个原因。除了环境污染和自然灾害,非法捕杀是一个重要的原因。人类正在试图猎杀野生动物对于时尚和一个很大的利润,从右边可以看到生动的画面。这导致了动物的数量急剧减少。
在我看来,我们是时候采取快速行动保护他们。国家公共活动应该推出给动物一个良好的生活环境。此外,政府应该通过一些公司法律禁止虐待杀害。只有用这种方法我们才能与野生动物和谐相处。
篇16：动物英语作文：My Dog
全文共 642 字
+ 加入清单My Dog
1、 My Dog Is Fun I have a cute dog in my home.It is only 1 year old.It is very activity. It always runs in the house and makes noise.when I walk my dog in the park , it usually plays in the grassland and makes itself dirty. So I always wash it when I come back home. In the evening when I do my homework , it stays on my feet quietly. When I finish my homework , it jumps to me to give me a surprise. It is very fun. Do you think so?
2、I have a dog. My dog name is DuDu. DuDu is 9 years. DuDu is fat. It wears a white coat. DuDu has two big eyes and two small ears. It has one short mouth. My dog is smart. I like my dog. Do you like him
篇17：爱护小动物的英语
全文共 977 字
+ 加入清单In our country, the number of wild animals is becoming smaller and smaller. Some of them are even dying outThe dangerous methods we human being has taken are as follows:
We have been cutting the trees to build houses, so the home of animals is intruded and they have to find new places to live. In this process, some of them died in the new environment.
The abuse of pesticide has also been endangering the life of wild animals.
In addition, in order to earn money, people have been killing the rare wild animals.
In that we have realized the threat of our behavior to our best friends, we should take actions to change such a condition by taking the following methods:
We should protect the wild animal by protecting the environment that they live in and protect themselves, not to hurt them. At the same time, we should establish more natural reserves for the wild animals.
I believe as long as work together to protect the wild animals, our life will be more and more comfortable.
篇18：保护动物的英语
全文共 1629 字
+ 加入清单A thought-provoking dialogue between the mother elephant and her own child appears in the first picture. Having growing his teeth, the young elephant is eager to share the exciting news with his mother. However, after repeating his words several times, there is still no response coming from the mother. Meanwhile, the attractive caption in the second photo reads: no trade, no kill.
The above pictures unveil a hazard posed to wildlife due to the expanding scale of world commercial hunting. At least two fundamental factors could contribute to this phenomenon. The industry of commercial hunting have undergone a booming expansion (along with the growing public awareness of the merits of wildlife, which makes/), making hunting unusually profitable. Worse still, lacking knowledge regarding the significance of ecological balance, some people take the gun to chase animals insatiably (and thus cause a severe threat to all life in the world). Apparently, this trend will surely in turn endanger humankind in the long run.
(On no account should we turn a blind eye to such things.//All these factors above make it crucial to take drastic measures to protect the wildlife.) Accordingly, governments all over the world are supposed to unite to work out effective measures against commercial hunting. Additionally, people should be educated from childhood to cultivate the awareness that we and the rare wild animals share the same precious planet. I do believe a harmonious relationship between the wildlife and human beings is awaiting us if we make every effort to promote wildlife protection both nationally and internationally.
篇19：关心动物英语作文
全文共 1304 字
+ 加入清单animals are natural resources that people have wasted all through our history. animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. thousands of kinds of animals have disappeared from the earth forever. hundreds more are on the danger list today. about 170 kinds in the united states alone are considered in danger.
why should people care? because we need animals, and because once they are gone, there will never be any more.animals are more than just beautiful or interesting. they are more than just a source of food. every animal has its place in the balance of nature. destroying one kind of animal can create many problems. for example, when farmers killed large numbers of hawks, the farmers` stores of corn and grain were destroyed by rats and mice. why? because hawks eat rats and mice, with no hawks to keep down their numbers, the rats and mice multiplied quickly.
luckily, some people are working to help save the animals. some groups raise money to let people know about the problem. and they try to get the governments to pass laws protecting animals in danger. quite a few countries have passed laws. these laws forbid the killing of any animal or planton the danger list. slowly, the number of some animals in danger is growing.
篇20：写濒临危机动物的英语作文北极熊
全文共 3755 字
+ 加入清单When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, thats whats supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So whats a hungry bear to do?
Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.
"Weve had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."
University of Alberta biologist Nick Pilfold.
"And weve known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?
To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitobas Polar Bear Alert Program.
While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.
"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and thats going to help supplement against longer ice-free seasons, that really doesnt show up in the data."
The problem is that polar bears evolved to rely on the marine diet.
"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; theyre highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing thats going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when theres sea ice."
Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, cant last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species survival in doubt.
北冰洋在秋季结冰以后，北极熊就会出发去寻求它们最喜欢的食物：富含脂肪的海豹和胡子海豹。海冰在夏季开始融化断裂。这使北极熊在夏季无法吃到美味的海豹，所以它们进入禁食期。至少，情况应该是这样。但是由于地球变暖，温暖的无冰季节越来越长。那饥饿的北极熊要怎么办?
科学家曾经认为，北极熊可能会转向陆地上的食物来补充它们对鳍足类动物饮食的需求，进而生存下去，这些陆地食物包括雪雁、雪雁蛋和北美驯鹿。
“文献中有过这类辩论，即在寒冷融化时陆地食物是否能满足北极熊的营养需求。”
尼克·皮尔福德是加拿大阿尔伯塔大学的生物学家。
“通过上世纪70年代初的研究，还有早期的探险者日志，我们很早以前就知道，北极熊会以陆地食物为食。但是辩论的焦点在于，这些食物是否能增加北极熊的能量。”换句话说，这些替代食物能否为北极熊提供足够的营养，弥补不能进食海豹带来的损失?
为了解开这个疑惑，皮尔福德及同事对西哈德逊湾荒野地区的北极熊在无冰季期间每天失掉的体重进行了估算，从表面上看，北极熊在这段时间食用了陆地食物。随后，他们将这一数据与通过马尼托巴北极熊预警计划暂时捕得的北极熊所失掉的体重进行了对比。
在被关期间，北极熊不吃东西。它们的体重每天大约下降1公斤。虽然野生北极熊能享用北极“小吃”，但是它们的体重每天也同样会下降1公斤。这一研究结果发表在《生理学和生化动物学》期刊上。
“显然结果表明，陆地食物不能为北极熊提供足以抵消大量损失的能量。所以，北极熊可以从食用海冰下面的食物转向食用陆地食物，并帮助它们对抗日益延长的无冰季这个观点，并没有在这项数据中得到证明。”
问题是，北极熊进化成了依靠海洋食物的动物。
“陆地食物以蛋白质和碳水化合物为基础，而北极熊需要的食物以脂肪为主。脂肪是这些熊真正需要的东西;它们高度适应的情况是，将脂肪吸收进它们的系统中，然后把这些脂肪放在身上以增加体重，这样它们之后就可以依靠这些脂肪来度过禁食期。唯一能提供给北极熊这种脂肪的就是海洋哺乳动物。但是它们只能在有海冰时食用到这些海洋哺乳动物。”
成年北极熊可以8个月不进食。但是小一些的未成年北极熊已经不再被哺育，它们必须要去猎食，可是它们不能在漫长的无冰季期间一直不进食。所以，随着北极地区变暖，较小的北极熊将会大批死亡。这使这些物种的生存成为问题。