英语作文动物的(实用20篇)

My cat really cute! Body hair is white, its a green a blue eyes, when I see a mouse, its eyes will stare, as if in said: "still not quick walk", if the mouse does not walk, it pretends to save in the past, the mouse ran away immediately.

Cats eat fish and meat. When I put the fish in it before, it swoops down in the past, started to bite, riddance soon.

Kitten will watch TV, whenever I turn on the TV, it always sits by my side and I watch TV together. Until I turned off the TV, it jumped off the sofa.

Cats sleep body curled up, if they do not look in the distance, thought it was a mass of white balls!

Teasing the cat, I always take something white to make it, because it is strange to like to go with white thing. I move, it starts to move, until met that thing. Outdoors, even if I get the white thread running, it also follow a white line run, until I was exhausted, put the rope down to grasp it, stop it. Sometimes I hang rope on high, and it is also hard to jump, until it caught the rope.

Of course, it will also make me, when I eat, homework, it always rub to rub on my pants, until rub wrinkled.

I like my lovely cat, I also want to teach it some skills, and make it better!

我家的小猫真的好可爱!身上的毛是白色的，它的眼睛一只绿一只蓝，每当看到老鼠，它的眼睛就会瞪得老大，好像它在说：“还不快走”，如果老鼠还不走，它就假装要扑过去，老鼠马上跑了。

小猫吃鱼和肉。每当把鱼肉放在它面前，它就猛扑过去，开始撕咬起来，不一会儿就消灭光了。

小猫还会看电视，每当我打开电视，它总是坐在我身旁和我一起看电视。直到我关了电视，它才跳下沙发。

猫睡觉时身子蜷成一团，在远处若不细看，还以为是一团白球呢!

逗小猫时，我总是手拿白色的东西逗它，因为它很奇怪地喜欢跟着白色的东西走。我移动一下，它也跟着移动一下，直到碰到那东西为止。在户外，哪怕我拿一根白线不停的跑，它也跟着白线跑，直到我筋疲力尽，把绳子放下让它抓到时，它才停下来。有时我把绳子挂在高处，它也拚命跳，直到抓到那绳子为止。

当然，它也会逗我，在我吃饭、写作业时，它总在我裤子上搓来搓去，直到搓得皱皱巴巴。

我喜欢我家的可爱小猫，我还要教它一些技能，让它更棒!

There used to be many kinds of birds which are pests for protected crops. They are good friends at present.But the number of the birds has been greatly reduced because too much poison is used. As the result, the numberof the pests has increased.The peasants spent a lot of money and time in killing them every year.But it is still hard to eliminate them.Now you can see how poor it is for us to protect wild animals and to keep the balance of nature.Only that everyone know these can we live on a beautiful lives.

曾经有许多鸟类都能够保护庄家，以防害虫的侵害。他们是农民的好朋友。但是鸟类的数量正在急剧减少，这是因为人们大量使用农药造成的。所以，害虫的数量增加了。每年，农民都会花费大量经费，以及时间来消除害虫。但是，人们还是很难将它们清除。如今，我们无法保护野生动物，并无法保持生态平衡。只有我们所有人提高意识我们才能过上幸福的生活。

Animal Protection

Animal is the friend of mankind, is an important part of the natural ecosystem. It is human precious naturalresources. Protect animals to maintain natural ecological balance has important significance.

But now many animals are facing the danger of extinction.With the development of society, pesticide used and serious pollution, city sewage .The wild animal living area is becoming increasingly narrow. Many of the animal is facing a food crisis currently . Whats more, in order to obtain wild animal of precious materials, humans are killing animals.

In order to maintain ecological balance, we should take some effective measures to protect animals.We should develop pollution standards to reduce emission of toxic substances, prevent the killing of some rare animals strictly. We can also establish a national park as a wild animal protection area. The most important thing is to improve people s knowledge of animal care.

Let us join hands in creating a harmonious coexistence of human and animal beautiful homes!

Animals are peoples friends, we should protect them.

If there is no animal on earth, there would be no human. Animal is a most of the earths food chain, if animals disappeared, we human beings will be extinct. For example: the frog disappeared, there is no animal pests to catch paddy fields, crops will not grow, humans have no food; If there is no tiger, the rabbit will excess breeding, our food is likely to be a rabbit eat didnt; If there is no owls, mice will encroach on our territory...

The earth is a big family, not lack of anyone, without animals, we humans situation, we should all band together and protect small animals.

动物是人们的朋友，我们应该保护它们。

地球上如果没有动物，就没有人类。动物是这个地球生物链的一大部分，如果动物消失了，我们人类也会灭绝。例如：青蛙消失了，就没有动物去捉稻田的害虫，农作物也就无法生长，人类就没有食物;如果没有老虎，兔子就会超额繁殖，我们的粮食就可能会被兔子吃没了;如果没有猫头鹰，老鼠就会侵占我们的地盘……

地球是一个大家庭，缺谁都不行，如果没有动物，我们人类的处境可想而知，我们大家应该团结起来，保护小动物。

Animals Need Protecting

There are more and more endangered animals at present，so how to protect them has been our task of top priority 。 Its wrong for people to hunt animals for their meat and feather，for they are our good friends。We should protect them instead of killing them。Giant pandas，which are one of the endangered animals，live in the forests and live on bamboo lealves。They can just live safely in the natural protection zones。We should stop killing animal and protect them。

导语：很多东西都面临灭绝的危险，我们应该保护动物，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Many wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. For example, with the developmet of cities, the using of insecticide and serious pollution, their living areas have become narrowcr and narrower. Many of the wild animals, now are confronted with food crisis. At the same time, man is killing off species just for getting their fur, skin, horns, teeth and meat.

In order to protect our resources of ecology, people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty. There fore, measures of the following should be taken: pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life, reserves.

Only if we human beings take some drastic measures can wild animals be preserved.

【参考译文】

许多野生动物正面临灭绝的危险，因为它们生活的环境已经发生了巨大的变化。例如，随着城市的发展，杀虫剂的使用和严重的污染，他们的生活区域变得越来越狭小。许多野生动物现在面临食物危机。同时，人类为了获取皮毛、皮肤、角、牙和肉而捕杀物种。

为了保护我们的生态资源，人们应该意识到任何物种的损失至少是知识的源泉和自然美的源泉。因此，本应采取以下措施：制订污染标准以降低有毒物质;严禁杀害某些稀有物种;应建立国家公园作为野生动物，保护区。

只有人类采取一些激烈的措施，野生动物才能被保存下来。

My fish tank with three small goldfish, one particularly attractive. Its eyes bulging, like a pair of big light bulb. Small mouth, a mouth spit out a series of small blisters, like children blow bubble gum. I named it "bubble eyes" three goldfish often play hide-and-seek together. "Bubble eyes" to stay still in one place, after waiting for the other two small goldfish hide well turned to find, but the two small goldfish too cunning, with unnoticed behind the "bubble eyes". Had half a day also can not find "bubble eyes". After a while, it turned to find that the other two small goldfish. I domesticated small goldfish is really interesting!

我家鱼缸里养着三条小金鱼，其中一条特别惹人喜爱。它的眼睛鼓鼓的，像一对大灯泡。嘴巴小小的，一张嘴就吐出一连串的小水泡，像小朋友吹泡泡糖一样。我给它取名“水泡眼”三条金鱼经常在一起玩捉迷藏的游戏。“水泡眼”先停留在一个地方动也不动，等另外两条小金鱼躲好后转身去找，可那两条小金鱼太狡猾了，神不知鬼不觉地跟在“水泡眼”的后面。害得“水泡眼”半天也找不到。过了一会儿，它一转头，才发现另外两条小金鱼。我家养的小金鱼真有趣!

There are more and more endangered animals at present，so how to protect them has been our task of top priority .Its wrong for people to hunt animals for their meat and feather，for they are our good friends。We should protect them instead of killing them。Giant pandas，which are one of the endangered animals，live in the forests and live on bamboo lealves。They can just live safely in the natural protection zones。We should stop killing animal and protect them。

I have a dog, it is lovely, it is called Mimi. Every time I go home from school, Mimi always cruising around me, I will go to the kitchen to get a piece of meat to it, it lay on the floor to eat. My legs and then jump to bark "Wang "called, so I picked up Mimi, it is the opportunity to lick my hand, making me laugh.

I like Mimi, like puppies.

我有一条小狗，它很可爱，它叫咪咪。每当我放学回家时，咪咪总是围着我绕圈，我便去厨房拿一片肉给它，它就趴在地板上吃。然后跳到我腿上汪汪汪地叫，于是我抱起咪咪，它就乘机舔我的手，逗得我哈哈大笑。

我喜欢咪咪，喜欢小狗。

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

Four little short legs, a fat, body, and a thorn and a small head and soft abdomen. Gather together a lovely and clever little hedgehog.

Little hedgehog is very cute, its whole body, in addition to the abdomen, the other parts are all full of thorns, like a small ball. Is everybody loved them.

Hedgehog thorns but its weapons, whenever meet enemies, it will shrink into a terrible thorn ball, even ferocious wild boar with it cant.

Hedgehog claws have sharp eagle claw, so, this is a hedgehog capture one of the good helper of other small animals!

In melon field, it is known, "a thief steal melons" it "steal" the melon method can and human picking melons method is not the same as well - when night falls, the little hedgehog will sneak up to melon field, the skin will be back into the "steel stab", then, a turn, they slipped behind the melon.

Hedgehog still have a kind of magic power, it is not only can swim, can catch a snake in the water! A hedgehog can swim because it lives in the bushes, afraid of hot, so can swim. It will catch a snake because it not only like to eat snakes, and the snake is cartilage, is afraid of the hedgehog.

I really want to know why the hedgehog has so many hard thorns? Did they to protect themselves, and evolve? Should be like this? Every time see little hedgehog, I think so.

This is my idea of a small animal, a hedgehog. Needless to say how much I like it.

四只小短腿，一个胖乎乎，并带刺的身体，加上小巧的脑袋和柔软的腹部。凑成了可爱机灵的小刺猬。

小刺猬很可爱，它的全身，除了腹部，其他部分全都长满了刺，像一个小刺球。真是人见人爱。

刺猬的刺可是它的武器，每当遇到天敌时，它就会缩成一个可怕的刺球，就连凶猛的野猪也拿它没办法。

刺猬的爪子有老鹰的爪子那样锐利，所以，这还是刺猬捕捉其他小动物的好帮手之一呢!

在瓜地里，它还是远近闻名的“偷瓜贼”，它“偷”瓜的方法可和人类摘瓜的方法不一样哦——每当夜幕降临，小刺猬就会偷偷窜到瓜地里，将瓜皮刺进背上的“钢刺”里，然后，一翻身，就背着瓜溜走了。

刺猬还有一种神奇的本领，就是不仅会游泳，还会在水里抓蛇!刺猬会游泳是因为它生活在灌木丛内，怕热，所以会游泳。它会抓蛇是因为它不仅仅喜欢吃蛇，而且，蛇是软骨组织，是怕刺猬的。

我很想知道刺猬为什么身上有那么多的硬刺?难道是它们为了保护自己，而演化出来的吗?应该是这样的吧?每当看到小刺猬时，我都这么想。

这就是我心目中的小动物——刺猬。不用说我是多么喜欢它了。

I have a cat .Its name is Mimi. Its very lovey.My family all like it.

It always plays with me every day .It has black and white fur.As long as we sayMimi,It right away runs to you.

Its very good!so My family all like it!

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.

Not only we humans upon earth, there are lots of animals. Humans and animals are good friends, so we need to protect animals. There are many animals are endangered in the world, such as the giant panda, Chinese sturgeon, manchurian tiger, and so on. However, my favorite animal is the highest level of protection in our country.

Because of his long fat, very cute. The giant pandas main food is bamboo. But because people cut down trees, the giant panda food less and less, so we should protect trees. There are some animals, because they do not adapt to the environment, is nearly extinct. So we need to protect the environment, love the nature. Let us and animals can live harmoniously in the earth. Students, animal is priceless to human nature, is our friends of human beings. Their life is closely related to our life.

The mass extinction of animals can cause serious ecological imbalance, so that our human living environment is destroyed. Lets start from me, start from now, to protect animals. Let the world a better place!

地球上不只有我们人类，还有许许多多的动物。人类和动物是好朋友，所以我们要保护动物。世界上有许多动物都濒临灭绝，比如说大熊猫、中华鲟、东北虎等等。然而，我最喜欢的动物就是我国一级保护动物大熊猫。

因为他长的胖胖的，很可爱。大熊猫的主要食物就是竹子。但是由于人们砍伐树木，使大熊猫的食物越来越少，所以，我们要保护树木。还有一些动物，因为不适应环境，已经快要灭绝了。所以，我们还要保护环境爱护大自然。让我们和动物能够和谐地生活在这个地球。同学们，动物是大自然给人类的无价之宝，是我们人类的朋友。它们的生死与我们的生活息息相关。

动物的大量灭绝会造成生态的严重不平衡，从而使我们人类的生存环境遭到破坏。让我们从我做起，从现在做起，保护动物。让世界变得更加美好吧!

My favorite animal is the rabbit.

Little rabbit has a pair of long ears, shaft above the head, the alert around listening to movement, ruby eyes going round and round. Two big die like corn, nibbling at things very convenient, to a furry white creature, if four feet and head up, just like a white cotton ball. Little rabbit moves very fast, there is a phrase "quiet as a pussy, move as tuotu" is to describe it.

Today, my family have a new guest, it is little rabbit. I live in a cage, let it give it a green vegetables to eat, and his eyes glow, immediately 烔 烔, two large die in their ears at the green trend, less than a few minutes, green vegetables was gone. It to to me sitting in a cage, eager eyes, as if to say: "give me something to eat, master!" I immediately threw a carrots to eat, not to a few minutes, carrot disappeared again, this time, it can be satisfied, lying in a cage, motionless, as if asleep, but I walked over, it wakes up, as if to say: "master, master, you take me go out to play, Im bored!"

Little rabbit to my house to add a few minutes of fun, I like it very much. I wish: everybody CARES for animals, because animals are humans good friends.

我最喜欢的动物是小兔子。

小兔子有一对长长的耳朵，竖在脑袋上面，警觉的听着周围的动静，红宝石似的眼睛滴溜溜乱转。两个玉米似的大板牙，啃起东西来非常方便，一身白茸茸的毛，如果把头和四只脚缩起来，就像一个白白的绵球一样。小兔子的动作非常快，有个成语“静如处子，动如脱兔”就是形容它的。

今天，我家来了一位新客人，它就是----小兔子。我让它住在一个笼子里面，给它青菜吃，它眼睛立刻发光， 烔烔有神，两个大板牙以迅雷不及掩耳之势向青菜扑过去，不到几分钟，青菜就不见了。它坐在笼子里，向我投来渴望的眼神，好像在说：“再给我一点东西吃吧，主人!”我立马投了一个胡萝卜给它吃，没到几分钟，胡萝卜又不见了，这回它可吃饱了，躺在笼子里，一动不动的，好像在睡觉，但我走过去，它又醒来了，好像在说：“主人，主人，你带我出去玩吧，我很无聊耶!”

小兔子给我家添加几分乐趣，我非常喜欢它。我真希望：每个人都关心爱护动物，因为动物是人类的好朋友。

我们要保护小动物，特别是小鸡这类弱小的动物，因为小鸡早晨可以叫我们起床，可以生一个又一个圆圆的的鸡蛋，还可以提供鸡肉给我们吃。

We need to protect the small animal, especially this kind of small animal chicken, because chicken morning to wake us up, can have a round egg, can also provide for us to eat chicken.

有一次，我和妈妈上菜市场，听见一位老奶奶在喊：“卖鸡了，今天的鸡又肥又嫩!”妈妈说：“今天，我们买一只鸡回家，炖汤喝。”我说：“好吧。”可又想了想：如果我们吃了鸡，那么就吃不到鸡蛋了，就对妈妈说：“不行，吃了鸡就没有鸡蛋吃了。”“傻孩子，你瞎操什么心啊!”妈妈不由分说地把我拉到卖鸡的那边。卖鸡的老奶奶正在杀鸡，只见她拔下鸡脖子上的毛，拿刀用力地在鸡脖子上划了几下。血喷向了四周，鸡挣扎了几下就死了。“太残忍了，我不要吃鸡!”我向妈妈大声的抗议。“好吧，不买了，我们就去买点蔬菜吧。”也许妈妈也觉得残忍，就同意了。

One time, my mother and I heard the food market, an old woman shouted: "chicken, chicken fat and tender today!" Mother said: "today, we bought a chicken soup to drink at home." I said: "OK." But think again: if we eat chicken, so cant eat the egg, the mother said: "no, not eat chicken egg to eat." "Silly boy, what do you care ah!" Mother allowing no explanation to put me into the chicken. The old woman was a chicken, she pulled out the hair on the neck, a knife in the neck with a few strokes under. Blood sprayed around chicken, struggled and died. "So cruel, I dont eat chicken!" I asked my mother loudly protested. "Well, do not buy, we went to buy some vegetables." Maybe mom was cruel, also agreed.

假如我们的生活中没有了动物，世界就会变得很孤独。我们要保护动物，从自身做起：少吃肉类食品，少穿皮衣毛衣;看见别人欺负动物，要勇敢地站出来劝说他们。

If we live without the animal, the world will become very lonely. We must protect the animal, start from their own: eat less meat, less wear fur sweaters; see others bully animal, we should stand up to persuade them.

保护动物，人人有责!

Animal protection, everyones responsibility!

Good morning!everyone,I am XX,fromXXX,i am so happy to have a change to tell all of you my favorite animal—— panda.She comes from China,why did I love her?Because she is very cute,but she was very shy.Her body stout like bears,but the first round tail short,black and white fur and white head and body clear.She staple food of bamboo,but also addicted to love drinking water,most of the giant pandas homes are located near the water in streams,the nearest will be able to drink clear spring.

大家好!我是来自X班的XX,非常高兴有机会在这里向大家介绍我喜欢的动物——大熊猫.她来自中国,为什么我爱她?因为她很可爱,但她很害羞.她的身体粗壮如熊,但在第一轮尾巴短,黑色和白色皮毛和白色的头和身体清晰.她主食竹,而且还染上爱饮用水,大熊猫的家园大多在附近的溪流水位置,最近将能够喝清泉.

I have a dog ,her name is Happy,I very love her.Her is clever and friendly.She loves to walk with me.She always plays with my grandmother,so I think is smart.I also like talking to her,she can understand every words which are said by me.

Do you know what kind of animal I like most? It’s monkey. Monkey is a kind of lovely animal.

Many people like monkeys very much. Generally, monkey has small body covered with fur. Some kinds of monkeys have two big eyes and ears and a long tail. I can see them on TV or the zoo.

Every time I go to the zoo, I will go to see them.

Monkeys often stay in trees and jump between them. They are so lively and favorable. When they are happy, they will act for visitors. It’s very funny.

We need to protect small animals, especially chickens this kind of small animals, because chickens can call in the morning we wake up, can have another round of eggs, chicken can also provide for us.

On one occasion, my mother and I serving market, hear an old woman Shouting: "chicken, chicken fat and tender today!" Mother said: "today, we buy a chicken home, stew to drink." I said: "ok." But wanted to think: if we ate chicken, then you cant eat eggs, he said to mother: "no, eat the chicken, there is no egg." "The silly child, you fuck what blind heart!" Mother threw themselves to pull me to the other side of the chicken. Granny is kill chicken chicken, she plucked chickens neck hair, the knife in chicken neck hard a few strokes. Chicken blood spray to the surrounding, struggled for a few times and he died. "So cruel, I dont want to eat chicken!" My mother to protest loudly. "Well, dont buy, we will go to buy some vegetables." Maybe my mother also feel cruel, agreed.

If our life does not have the animal, the world will become very lonely. , we need to protect animals from oneself: eat less meat, less wear leather sweater; See someone humiliate animal, to bravely to come forward to persuade them.

To protect animals, everyone duty!

我们要保护小动物，特别是小鸡这类弱小的动物，因为小鸡早晨可以叫我们起床，可以生一个又一个圆圆的的鸡蛋，还可以提供鸡肉给我们吃。

有一次，我和妈妈上菜市场，听见一位老奶奶在喊：“卖鸡了，今天的鸡又肥又嫩!”妈妈说：“今天，我们买一只鸡回家，炖汤喝。”我说：“好吧。”可又想了想：如果我们吃了鸡，那么就吃不到鸡蛋了，就对妈妈说：“不行，吃了鸡就没有鸡蛋吃了。”“傻孩子，你瞎操什么心啊!”妈妈不由分说地把我拉到卖鸡的那边。卖鸡的老奶奶正在杀鸡，只见她拔下鸡脖子上的毛，拿刀用力地在鸡脖子上划了几下。血喷向了四周，鸡挣扎了几下就死了。“太残忍了，我不要吃鸡!”我向妈妈大声的抗议。“好吧，不买了，我们就去买点蔬菜吧。”也许妈妈也觉得残忍，就同意了。

假如我们的生活中没有了动物，世界就会变得很孤独。我们要保护动物，从自身做起：少吃肉类食品，少穿皮衣毛衣;看见别人欺负动物，要勇敢地站出来劝说他们。

保护动物，人人有责!

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。