我最喜欢的动物是狗狗英语作文汇编20篇

Many animals are in danger of dying out.As is shown in the chart， we can see the number of animal species decreases faster and faster and this trend will continue.From 1980 to 2010， at least 1 million animal species have disappeared.Worse still， more and more wild animals are in great danger.It is not a piece of sensational news; it is a fact， a harsh reality.Unfortunately， we may not see these animals in the near future。

From the second picture， we can find some reasons.Why is the number of animal species declining year by year? Apparently animals have bee victims of fashion industry.Animal skin has been used to make fashionable clothes and these clothes sell at a high price.So some greedy people begin to kill animals in a large quantity.This irresponsible behavior not only breaks the balance of nature but also endangers the living environment of human beings。

As far as I am concerned， something must be done to stop this illegal action.We believe "no buying， no killing".First， we must make concerning laws to protect these animals in danger.Second， we must take some measures to protect animals effectively.Animals are our friends and part of our environment.Third， we should raise peoples awareness to protect animals and our environment.In this way， we can build a harmonious society and ensure a sustainable development。

曹睿珊

在我很小的时候，养过一只狗名字叫“小白”。小白有着圆圆的脑袋跟狐狸一样的耳朵，它的身体小小的有着像晶莹剔透的黑宝石一样的眼睛。

有一次我去上幼儿园，一位哥哥牵着小白走过来，我看了看小白，小白抬起了头，用奇怪的眼神望着我，好像对我说："看我干嘛？"我小心翼翼的摸了一下小白柔软的皮毛，它既然舔了我一下。哥哥一看笑了笑说："你既然这么喜欢这只狗就送你吧！"妈妈也笑了说："谢谢，有狗粮吗？"哥哥把狗粮递给了妈妈。还有一次我看见一只大狗连忙躲到妈妈身后，小白汪汪大叫把大狗吓跑啦！难忘的时刻总是那么短暂。没过几天我生病了，妈妈只好把小白送掉，我还对小白说，我妈妈说混血儿等你知道你爸你妈分别是什么品种时一定要告诉我啊！

要是小白现在还活着，我会多么开心啊，我想跟它一起玩，睡觉和散步，时间过得这么快，小白我好想你啊！

我喜欢的小动物是动物界里忠诚度最高的，它既驯良又活泼可爱，它就是——小狗。

几只小狗中最可爱的要数白母狗生的那只“黑大”了，它身上的毛一块黑一块白的，简直像只纯正的“奶牛狗”。最难看的就是黑母狗生的一只“灰太狼”，它肥肉很多，眼睛还有点儿红肿，跟“年兽”没有任何差别。

我的家乡养了七只小狗，晚上，特别是风雨交加的天气，只要稍有一个黑影闪过，小狗们就汪汪大叫不停，它们是那么地机警啊！每次夜晚我补习回来的时候，远远的小狗们还看不清的情况下都要对我汪汪叫

忠诚，是狗最大的特点，家里空无一人的时候，它们不会跑出去玩，而是在家看守。在一个风雨交加的夜晚，我们早早地进入了梦乡。大约到了十二点左右，小狗们开始汪汪大叫不停，我起来一看，原来有只兔子从巢里蹦出来了，我把兔子抓进去后，小狗还舔了我几下脚，摇着尾巴去屋檐下蹲着，好像在说：“小主人，辛苦您了，我以为是小偷呢，吓我一跳。”

这是我喜欢的小动物，它忠诚，是人类最好的朋友。

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.

I have a white dog.Its name is Bobo.She is a female dog.She comes from Beijing,China.She has two big eyes and a small month.She wears white clothes.

She often walks around at home.It has nothing to do.She likes eating ice-cream so much,So do I.When I eat ice-cream,she will look at the ice-cream carefully.So I will give her some to eat.

我家有一只可爱的小仓鼠，它的可爱表现在喜欢用它的利抓在有食物的上方挖一个大洞，然后进去，再把洞补好。这样既可隐藏自己还能觅食。等它吃饱了后它就在一个轮子上疯狂的跑起来，那个转动的轮子像有时间魔力一样，仓鼠刚吃饱们肚子一下子就又变回原来的样子了。

而且它还非常贪玩，有一次我带它去草坪上玩，我一把它放出，它就开始乱跑，一直跑一有跑，跑到一颗树下转了一圈然后停在我面前乞求我给它一些食物，可能是饿了吧！于是我马上拿出一些好吃的食物放在草坪上，沿着笼子的路线。一会儿就把它引进笼子里来了。

你们说这是不是一只又可爱又贪玩的小仓鼠呢？

我奶奶家刚养了一只小猫，我非常喜欢它，每个周末我都去看它。

它有一身灰白色的皮毛和三角形的耳朵。那双圆圆的绿色眼睛，一到晚上就像两颗闪闪发光的绿宝石。它的鼻子黑黑的、小小的，但是非常灵敏。它的脸两旁各长着几根又细又长的胡子。

小猫喜欢吃鱼。有一次，妈妈做了鱼汤，小猫老远就闻到了，快速地跑到妈妈身边，喵喵地叫着，好像跟妈妈要鱼吃。妈妈看到它那可爱的模样便丢给它一条小鱼。小猫快速地叼起小鱼跑到角落里吃起来，吃完之后才满意地走出来围着妈妈转了几圈，好像是在谢谢妈妈。小猫还非常爱干净，它拉便便还要用土埋起来。小猫总是在白天懒洋洋地睡大觉，可是一到晚上，它便瞪着两只绿宝石似的眼睛，到处捉老鼠，保护我们的粮食。

现在小猫已经是我的好朋友了。每次我吃零食都给它分一点。我坐下的时候，它就在我的脚上蹭来蹭去，可爱极了。你喜欢我家的小猫吗？

作者：二年级四班 田可欣

今天，我和爸爸妈妈一起散步看见了一只可爱的小狗，使我想起我家三年前养的一只小狗--嘟嘟。嘟嘟有一双大而黑的圆眼睛，还有一个小小的塌鼻梁不停的在喘着粗气，妈妈说那是因为它的鼻腔比较短。

有一次，嘟嘟乘我开门的一瞬间就蹿了出去。我怎么也追不上它，我越是追它就跑的越快。我气的直跺脚，它还远远的回头看看我。这时我想起它爱吃的火腿肠，我回家取了一根红色的火腿肠远远的对它喊：“嘟嘟，回来吃火腿肠吧?”果然贪吃的它看了一眼就飞快的跑了回来。看着它那贪吃的样子我满肚子的气也就烟消云散了。

后来因为爸爸妈妈工作忙，嘟嘟被送到了塔城的奶奶家。我为此伤心的哭了一场。直到现在要是看见和嘟嘟长的像的小狗我就会试着叫嘟嘟的名字，真希望那就是嘟嘟啊。

我好想我的嘟嘟呀!

曹丽果

我最喜欢的动物是小鸡。小鸡有一身黄色的毛，一个红色的小尖嘴，一双晶莹剔透的眼睛，浑身毛茸茸的很可爱。

有一次，妈妈带我到市场上买菜。忽然，我看见有一个绿色盒子里装满了“小肉球”。我仔细一看，原来是许多可爱的小鸡！我一下子被吸引住了。绿色盒子里有黄色、粉色、蓝色、绿色的小鸡，一个个挤在一起“叽叽叽”地叫着。我对妈妈说：“能给我买两只吗？”妈妈说：“好吧，就买两只。”于是我们买了两只黄色的小鸡。

回到了家，我给小鸡找了一个大箱子把小鸡放了进去，然后给它们倒了一杯水，洒了一点小米粒。每天我都照顾它们，可是小鸡却无精打采的，不吃也不喝。结果，过了两天一只小鸡死了，又过了两天，另一只小鸡也死了，我真难过。

Springis my favorite season. In spring days, everything comes out. While you arewalking outside, your eyes will be filled with green.

Inspring days, our world is a sunny place, which is covered with green trees andcolorful flowers, so it can be described as a paradise. Especially when you arein the countryside, you can see green mountains, vast fields, clean streams,and all the living creatures, coexisting harmoniously. All of them make up themost beautiful picture in the world.

Inspring days, the sun shines brightly, and theres also some pleasant breeze. Sohow charming it is while feeling the spring wind blow us. Its also wonderfulto enjoy the beautiful sunshine. You will also get a lot of refreshments whilehaving a walk outside.

Ihope we can enjoy the life of spring every day.

In our common home - the earth, living a lot of animals, what kind of animals do you like? Anyway, my favorite animal is our most loyal friend - dog.

I most love the dog is my neighbors dog Beijing Pakistan round and Collie handsome. Every day they play together, is a good friend of clubbing lingers, I also love them, they saw me and wagged his tail and ran towards me.

Handsome, big body, about more than 60 centimeters long. Two legs standing, completely to my shoulder, his eyes, nose, mouth, ears are mostly round, I love watching him running figure -- like curly flying, a horse. I often run with the round, handsome and handsome, every time is handsome, first, round second, I third. It is no exaggeration to say that the speed of the lion is no less than the speed of a thoroughbred horse. The general dog ran up, will be issued a "clicking" sound, but handsome running in a low voice, not carefully hear. The handsome man also looked handsome when he ran: curly hair flying and his body arched. If you want to use a word to describe Shuai Shuai, that is: shuai. If one word is used, it is impeccable.

Relative to Shuai Shuai, the round shape is a lot smaller, the body length is only about thirty centimeters, smaller than the handsome about half. His name comes from his eyes, which is so round. Like a shiny black stone. And his legs are round, too. The round name comes in this way. And his leg is very short, so even if he cast the foot run, couldnt run fast, but I still love his simple cute.

Thats what I like about animals. What do you like?

我家有一只活泼可爱，机灵敏捷的小狗，它叫毛豆豆，我非常喜欢它。

它长的很漂亮，一双圆溜溜的大眼睛，像两颗大宝石镶嵌在一对弯弯的眉毛下，它的鼻梁高高的，它还有锋利的牙齿，看着它的牙齿，你就要打寒颤了，不过它从不咬人。它还有像三角形的耳朵非常灵敏，只要有任何动静，它便紧张的听着四周的动静，它有一身蛋黄而又油亮的皮毛，背上的毛软软的，摸上去真舒服呢！

它虽然很开爱，但是嘴很馋。它最喜欢吃肉和骨头，我若把骨头和肉拎起来，它就会站着跳起来随着食物摇摆走动，啃骨头的时候只要啃不动，它就前爪使劲按住啃，啃的时候头还一左一右的摇晃，好像连吃奶的劲也使出来。它睡着的样子，更是十分可爱，有的时候耳朵紧贴在地面上，有的时候，把整个头夹在了两个爪子的中间，还有的时候把整个身子团成一个圆圈，像个毛皮球。记得有一次，一个陌生人进了我家的院子，毛豆豆看见他非常陌生，它含着凶恶的目光扑了过去，“汪——汪——汪”的直乱叫，吓的坏人拔腿就跑，你说这毛豆豆难道不厉害吗？

毛豆豆是我最忠实的好朋友，它可以帮我们看家护院，也可以与我玩耍。可是去年毛豆豆突然走失了，我和奶奶到处找可怎么也找不到，我们很想念它，但愿有好心人收留它让它健康快乐的成长。

Rabbit is an cute kind of amimals.It has two long ears.They can make rabbits hear carefully.It also has a short tail，which makes rabbits so lovely.Rabbits likes eating carrots.If you feel lonely.You can keep a rabbit.It can be your good friend.

兔子是一种机灵的动物，它有两个长耳朵，它们可以让兔子清楚地倾听。兔子还有一个短尾巴,让兔子更可爱。兔子喜欢吃胡萝卜，如果你感到孤独，你可以养一只兔子，它会成为你的朋友。

我最喜欢的小动物就是蚂蚁，它们差不多是指甲盖的十分之一那么大，它们是黑色的，有六条腿和一对小小的牙齿，它们的尾巴上还有一个非常小的刺，几乎看不见。

小时候我最喜欢用水和它们“玩”。我只要发现有一小群蚂蚁，我就会拿起水壶给它们免费洗一次“冷水澡”，把它们冲得措手不及，这些水对它们来说就等于大洪水一样的猛烈，它们被水冲到了砖缝中，再被砖缝中水流冲走，等到了没水的时候它们又重新站了起来向其他方向逃离。可是它们一爬起被我发现，我就会向它们发起下一轮猛烈的进攻，还没等它们反应过来，它们又被水流冲走，就这样越冲越远，最终它们被冲进了一个水洼里，但它们还是没有放弃，于是游啊游啊，游出了这个水洼之后，它们向蚁巢跑去。

我还有一种跟它们“玩”的方法，它们的蚁巢口旁边都是沙子，我趁着它们很少的时候就把沙子推倒堵住洞口，有些蚂蚁被堵在了洞口，突然沙子动了一下，接着又动了好几下，就这样洞口开始逐渐下陷，又过了一会洞口变逐渐通了，洞口又恢复了往常的模样。

蚂蚁们的这种精神真是值得人们学习。

我喜欢的小动物呀，她鼓鼓眼，阔嘴巴，全身鳞片包着它。游来游去真自在，玻玻璃缸里来安家。小朋友，你们可能猜到了，这就是小金鱼。

小金鱼的眼睛圆圆的、黑黑的，长在头的两边，它还有一张小巧的嘴巴，在水里的时候，嘴巴总是一张一闭的，看上去好像在什么地方都要呼吸。小金鱼有一身漂亮的鱼鳞，这身鱼鳞的颜色是橘红色的，色彩鲜艳，非常漂亮。在灯光的照射下显得亮晶晶的，很好看。她的肚子大大的，就像吃了好多鱼食一样，非常滑稽。小金鱼的尾巴就像一个小公主穿着一件裙子一样，很美丽。

我喜欢可爱的小金鱼。

英语写作和语文写作一样，文字表述正确还只是最基本的要求，至于文字的流畅程度同样重要。不妨看看。不妨看看我最喜欢的季节英语作文。 我最喜欢的季节英语作文一

My Favourate Season

How glad I am that summer has come!

I like summer best because I can have a very happy time then. Every summer I stay at my uncles house in the country for some time and enjoy the life there. I can also catch worms that are not found in cities. In addition, we can see many kinds of birds. I think the country is certainly a better place than the city for vacation.

Summer is my favourite season. 我最喜欢的季节英语作文二

There are four seasons in a year.The first season is spring. In spring, almost everything comes back to life. The snow begins to melt, the trees sprout and the grass turns green.Spring is warm so that its a good time to go hiking outdoors. After spring, itis summer. Summer is my favorite season,because I can swim quite often. The third one is autumn. In autumn, the weather is cool and comfortable. Farmers may be the busiest people, because autumn is a time of harvest.Winter is the last season of the year. In winter, the weather is very cold. In the north, it usually snows. Children can play games or make snowmen after snow. It seems very funny. But, because of the cold weather, I dont like winter very much. Whats your favorite season?

一年中有四个季节，第一个季节是春天。春天，万物复苏，雪开始融化，树木开始发芽，小草开始变绿。春天是个暖和的季节，是外出徒步旅行的好时机。春天过后就是夏天。夏天是我最喜欢的季节，因为我可以经常游泳。第三个季节是秋天。秋天，天气凉爽舒适。农民是最忙的人，因为秋天是收获的季节。冬天是一年的最后一个季节。冬天天气很冷，在北方经常下雪。下雪后孩子们喜欢玩游戏或者堆雪人，似乎很好玩。但是，由于天气寒冷，我不是很喜欢冬天。你最喜欢的季节是哪一个呢? 我最喜欢的季节英语作文三

My Favourite Season There are four seasons in one year, they are spring, summer, autumn and winter. In my opnion ,spring is the best season.First of all, it is very warm. The winter goes away, so the tempreture is higher ,and rather comfortable for human beings. Secondly, spring is very beautiful. The grass and trees grow freely, the flowers are rather colourful, the butterflies fly happily,and the wind is warmer. Thirdly, it is the first season in a year.It means the children are i one year older than before. They are adults now and they can protect themselves . And at last, I like spring just bacause I was born in March. All in all, I believe that spring is my favourite season.

[我最喜欢的季节英语作文参考

想必每个人都有自己喜欢的动物：小狗、小猫、小鸡……而我最喜欢的是鹦鹉。

我想问大家一个问题，每天早上是谁去喊你们起床呢？也许你们会说“是闹钟！”“是妈妈！”“是爸爸！”……而我是被小鹦鹉们叫醒的。咱们家每天早上“叽叽！”“叽叽叽叽！”“喳，喳喳喳喳！”的声音此起彼伏、不绝于耳，让我只好起床。

我有三只鹦鹉，一只是虎皮鹦鹉：淡粉色的小嘴亮得能照出人影来，乌溜溜的眼睛对称地贴在小脑袋上，羽毛绿黄相间，上面似印着老虎的斑纹。而另外两只是红牡丹鹦鹉：红彤彤的大嘴巴、黑乎乎的眼睛镶嵌在小脑袋上，脖子上的橘色羽毛像一条围巾，深绿色的翅膀像一件夹克，淡绿色的腹部像一件衬衫，搭配着蓝中带紫的尾巴，一双灰色的小爪子撑着其小小的身子。

它们个性活泼，各自都有着拿手绝活。虎皮鹦鹉对食盆很感兴趣，总喜欢用爪子将食盆打翻，然后用嘴巴将食盆叼起来，再把食盆扣在头上顶着……为了不让它打翻食盆，爷爷奶奶想尽了办法：往食盆里放石头，它就用爪子把石头扒出来；换个大的，它就用爪子抓住食盆的边沿，身体使劲往后仰，结果……你懂的；用铁丝加固，它就用嘴巴把铁丝掰直……而另外两只红牡丹鹦鹉，它们俩个合作起来非常厉害，它们俩能把打结的绳子解开哦！奶奶经常把一根打结的绳子吊在鸟笼中间，逗它们，它们总是很有默契地用喙去解开绳子，而且乐此不疲。

这就是我喜欢的动物——鹦鹉，怎么样？听了我的介绍，你们是不是也喜欢上了鹦鹉呢？要不，你们也养几只，我们还可以交流养鸟经验呢！

I like the small animals is pure white cat, it whole body white hair like snow let me very love, its eyes narrowed into a crack during the day, night round, like two emeralds. His ears have been up, as long as you move, his ears will move; His hearing is very agile, as long as people walk on by, it will be called "meow"; Its teeth are very hard, and spiky, eating up to very easily, I like it very much.

Remember once, my brother come to my house to play, the kitten, enthusiasm has been rushed brother "smile". Brother see him so lovely, then come up with a very thick wool, want to know the cat likes to play with wool, yarn in hand, brother cat followed, wool from turning in the past, the cat rushed over, not caught, himself closed on empty air, my mother and I laughed, cat is a little angry, brother, in a piece of cloth, bend, kitten, and save the empty, this is brother became a "bucket" cat. Brother and five stool was placed in a row, put the wool in stool to mouth, cat rushed over, to bite the yarn, I cheered for it, and happy for it.

If winter comes, I built a warm nest to the Kitty, it was very happy. Whenever I go home from school on the stairs, the cat is lying on the sofa waiting for me, I entered, it smile on his face became a flower. See I bought it, eat happily licks my hand, very enthusiastic!

One day, my father told me: "you see, a dog is loyal, treacherous court official but the cat." I try so hard, favour say: "the cat is my favourite animal, treacherous court official it isnt!" Mom came running when the referee, set each write like cats or dogs 5 reason, then the evaluation of high and low. I brush flash, 1, I like cats; 2, the kittens fur is very smooth; 3, the cat is very sincere to me; 4, the cat is very lovely; 5, the cat is very clever. Just finished writing, I looked up to see dad, ha, he wrote two, we all handed over after the volume, the referee on the grounds that the father wrote the word much, the father victory. I am very defy spirit, I believe that I will lovely kittens are guardians forever!

Kitten, naughty, lovely, he brought happiness to my life, no matter what, my favorite animal is cat!

我喜欢的小动物是纯白色的猫，它全身白似雪的毛让我无比喜爱，它的眼睛白天眯成一条缝，晚上圆溜溜的，活像两颗绿宝石。他的耳朵一直翘着，只要你动一下，他的耳朵就会动一下;他的听力十分敏捷，只要有人轻轻走过，它就会“喵喵”的叫;它的牙齿很坚硬，又尖又长，吃起东西来十分轻松，我很喜欢它。

记着有一次，我的哥哥到我家来玩，小猫无比热情，一直冲哥哥“微笑”。哥哥见他这么可爱，便拿出一根很粗的毛线，要知道猫最喜欢玩毛线了，哥哥提着毛线，小猫也跟着走，毛线从拐弯处过去，猫一下冲过去，没有抓到，自己倒扑了个空，我和妈妈哈哈大笑，猫有点生气，哥哥换了一块布，过了拐弯处，小猫冲去，又扑了空，这下哥哥成了“斗猫士”了。哥哥又把五个凳子摆成一排，把毛线放在凳子口，小猫一下冲过去，奋力咬住了毛线，我为它欢呼，为它高兴。

冬天来了，我给小猫盖了一个温暖的窝，它非常高兴。每当我放学回家走在楼梯上时，小猫就卧在沙发上等我，我一进门，它脸上笑成了一朵花。见我买了吃的给它，高兴得舔着我的手，无比热情!

有天，爸爸给我说：“你看哪，狗可是忠臣，猫可是奸臣。”我着急了，忙说：“猫是我最喜欢的动物，它才不是奸臣呢!”妈妈跑过来当裁判，规定每人写出喜欢猫或狗的理由5个，然后评高低。我的笔刷刷写着，1、我喜欢猫;2、小猫的毛很光滑;3、猫对我很真诚;4、猫非常可爱;5、猫非常机灵。刚写完，我抬头看看爸爸，哈，他才写了两个，我们都交了卷后，裁判以爸爸写的字多为由，宣布爸爸胜利。我很不服气，我相信，我会将小猫的可爱永远扞卫下去!

小猫，淘气、可爱，他给我的生活带来了快乐，无论怎样，我最喜欢的动物就是小猫!

我最喜欢的动物很特别，大家想知道吗？那就来猜个谜语吧：大大的耳朵凸起的嘴，红红的屁股短短的腿，长长的尾巴人样的.手（打一动物）上面的谜大家猜出来了吗？我来揭开谜底吧！这是一只活泼可爱的小猴子。猴子的模样特别像人，但也是有差距的。猴子是个总称，我最喜欢的就是日本的袖珍石猴了，它们也称弥猴，最大的不超过可乐瓶。猴子的特点一就是特别聪明，能够自己剥香蕉，还能拿手机自拍呢！依数据显示，猴子是动物界中最聪明的。猴子的特点二就是特别顽皮，总是在树上荡来荡去的。有一次，我去动物园，看见有几只猴子在锻炼身体呢！它们一个个兴致勃勃、精神抖擞的，叫人看了不把这场面拍下来才怪呢？猴子有的时候会发怒。可能是因为抢它东西、不给它饭吃、打它等一系列事情。它发怒时会张开大嘴巴或是做出不开心的表情，接下来它可能会咬你、抓你脸，甚至更加严重，所以尽量不要让猴子生气。小猴子活泼可爱、机灵调皮，有时还会发脾气，但是它是我们的好朋友，你对它好，它也会喜欢你的，告诉你们一个小秘密：我是属猴的哦！

鹦鹉是我最喜欢的鸟，买一只鹦鹉是我的心愿。有一次，我看中了一只鹦鹉，我想：我梦寐以求的鹦鹉终于可以到手了。不过，还不知道妈妈同不同意，妈妈果然不给我买，我只好利用绝招求情。最后，妈妈只好无可奈何地买下了。我乐得一蹦三尺高。

它身上的羽毛五颜六色，有的绿蓝相间，犹如浮萍在水面上开放，有的红黄相间，犹如一片朝霞闪烁着金光。两颗玛瑙般的眼睛闪闪发光，鹰钩一样的嘴巴呈黄色，非常坚硬。

一到家，我马上为它淮备食品，我盛了米饭和一杯水，端到它面前就走了，当我再次回来时，它可狼吞虎咽，吃得津津有味，食物一下子就被一扫而空了。今天，我刚教它学说话，跟本不会说，简值是对牛弹琴，要有耐心，经过一天天地训练它，它越来越有感觉，比较短的句子它学得像模像样，比较长的句子它学得声情并茂。怪不得大家说：“鹦鹉学舌”真好玩呀!

[小学作文：我喜欢小动物—鹦鹉

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。