动物狗英语作文(经典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。

The puppy home, many grow very cute, round head has a pair of long big, hairy ears, it can hear the sound of distant tiny; A pair of big eyes sparkled like a pair of black stones, the golden hair soft and fine fan, its tail often like a broom, and he is very cute.

It likes to sleep, when we are not at home, it is always a man lying on the sofa asleep, and when we come back its spirits. All right, it also like to bite. Remember once, I in the ball, great aim at time, quickly, bite into, snatch my ball, diao back to its nest, with its claws hold tightly, afraid to let me take away; If one day my socks are missing, there must be many away again; Even my toy is always not immune, it dont change this bad habit of always.

But it is also very smart, attractive. Every time I come home from school, so I always a lot, my legs tightly around, say what also dont loosen. Also kept licking my hand and bite my skirts, Ill dog hair all over.

A lot of the most lovely characteristics which is able to examine yan guan is lubricious.

When I am angry, carefully, it always stay in my side, or lie on my feet, as if to comfort me.

When I am angry, it immediately shrewdly drilling under the table, hide yourself, prevent angry at it.

When I am sad, it is sensitive to come and use it to rub your body, or gently lick your hand, let me feel hospitable, as if my bosom friend.

When I am happy, it is presumptuous to jump on the sofa, amuse me...

You said my family a lot of cute?

我家的小狗多多长得十分可爱，圆乎乎的脑袋上有一对长长的、毛茸茸的大耳朵，它能听到远处极细小的声音;一双水灵灵的大眼睛象一对黑宝石一样闪闪发亮，金黄色的毛柔软细迷，它的尾巴像一把扫帚经常扫来扫去，十分活泼可爱。

它喜欢睡觉，当我们不在家的时候，它总是一个人躺在沙发上呼呼大睡，当我们回来了它就精神大振。没事时，它还喜欢咬东西。记得有一次，我在拍皮球，多多瞄准时机，迅速扑过来，一口咬住，把我的皮球抢走，叼回它的窝里，用爪子紧紧按住，生怕我来夺走;如果有一天我的袜子不见了，准是多多又叼走了;甚至我的玩具也时时不能幸免，它的这个坏毛病总也改不了。

但它也十分聪明，讨人喜欢。每次我放学回家，多多总是老远就扑过来，把我的腿紧紧抱住，说什么也不松开。还不停地舔我的手，咬我的衣角，弄得我满身都是狗毛。

多多最可爱的特点就是能察颜观色。

当我生气时，它总是小心翼翼地依偎在我身边，或躺在我的脚丫上，好象安慰我似得。

当我发怒时，它马上机灵地钻进桌子下面，把自已藏起来，防止迁怒于它。

当我伤心时，它又善解人意地过来用它的身子来蹭你，或温柔地舔你的手，让我倍感亲切，好似我的知音。

当我高兴时，它又放肆地在沙发上跳来跳去，逗我开心……

你说我家的多多可爱吗?

我有一只温驯可爱的小狗，一身乌黑发亮的毛，一双黑黑的眼睛，两条有力的腿，一条短短的尾巴总是摇来摇去。

我们家的小狗名字叫做菲菲，它可喜欢看电视了，如果有他喜欢看的节目，他就会汪汪汪的叫，好像是在赞赏似的。菲菲如果厌烦的时候，他就会撕扯着我的底裤到处咬，直到我的底裤全部沾满泥为止。

菲菲不但喜欢看电视，也喜欢跑步，我整天都带着它去散步，他还总是和我赛跑，不过每次都是我输。有一天，菲菲一直躺在地上不起来，好像是睡着了，可是它的眼睛却总是睁开的，我以为它生病了，便问妈妈要给他吃什么药，我妈妈说菲菲是要生小狗咯，好让我不要吵到它。不一会儿，个可爱小狗狗就从菲菲的屁股里出来了，他们个个身上都好像有一次粘膜粘住，我妈妈说那层粘膜是来保护小狗不被风吹冷的粘膜。可是那只小狗不几天就死了，菲菲从此以后没精打采的，就连它最喜欢的肉骨头也不啃了，我想，他一定时因为狗狗死了便导致它太伤心了，所以才无精打采的。于是，我便整天给她按摩洗澡，没过几天，它就恢复正常了。

瞧，这就是我们家的菲菲。是不是聪明又可爱呢？

The little Rabbit has a coat of white hair.The two ears are long and prick up on its head.

It is furry,soft and white with two red eyes glaring above the chin.

Its eyes are like a pair of small red hulbs.

Exposed to sunlight,they become little pieces of red thread.

My Pet

I have a pet. I named him Nicholas. Nicholas is a pure Husky dog. He was about 8 weeks when he first came to my home. We will have his birthday next week and he is turning 2 years old. Good time goes fast. Hes totally mature now but somehow I just refuse to admit it. In my eyes, no matter how big the size he is, hes just my adorable puppy. Owning a dog is a huge responsibility. I spent a lot of time house-trainning him. Youd have to be patient, compassionate, and consistent. Fortunately, Nicholas is a fast learner. Now he knows exactly where to go potty, what time to eat, and how to play. He used to be too energetic and he liked biting. But now, as hes growing up, hes gentle and obedient. On week days, I take him to parks. I toss out his toy and he goes and get it. He loves this game. Nicholas brings me lots of fun and Im proud of being his owner.

Russian Scientists Surrounded by Polar Bears

俄罗斯科学家被北极熊包围

Relief supplies finally arrived on a remote Arctic island where a group of scientists had been trapped in a weather station. Up to a dozen polar bears had surrounded the station on the island of Troynoy and set up camp approximately two weeks ago. The bears were becoming more aggressive over time, killing one of the stations dogs and breaking a window. On Wednesday, a helicopter that picked up supplies from a nearby vessel arrived with dogs and flares and was able to scare away the bears and allow the researchers to get back to work.

救灾物资终于抵达了偏远的北极岛屿，有一批科学家被困在那里的气象站中。大约两周以前，十几只北极熊将特洛伊诺伊岛(Troynoy Island)上的一个气象站团团包围，并在那里安营扎寨。随着时间的流逝，北极熊变得越来越有攻击性，咬死了气象站的狗，还打破了窗户。周三，一架从附近船只上携带犬和照明弹物资的直升机到达岛屿，能够将北极熊吓走，让科学家正常工作。

I like dogs, because they are man’s good friends. They can do many helpful thingsto us, such as guarding our houses, greeting guests, helping the police, and soon. Some trained dogs can even lead the blind people and save people’s lives.So they‘re treated as our family members. I hope someday dogs will be in greatharmony with human-beings.

我喜欢狗，因为它们是人类的好朋友。他们可以为我们做很多有用的事情，如，保护房子，问候客人，帮助警方等等。一些受过训练的狗甚至可以引导盲人、拯救人们的性命。所以他们都被当做是我们的家庭成员。我希望有一天狗能与人类和谐共处。

暑假里，爸爸买回了一只泰迪狗。刚买回来时，我们把棉布揉软了铺在笼子里，小心翼翼地把小狗放进去，就算是它的家了。

我仔细地观察着这只小狗，呵，长得真漂亮：它个子小小的，但全身肉嘟嘟的。全身上下的皮毛都是棕色的。顺着它的身体继续看，小脑袋上的三角形耳朵耷拉着，一双黑葡萄似的眼睛水汪汪的，炯炯有神，骨碌碌的上下转动着：乌黑的小鼻子总是湿润润;身后小尾巴毛茸茸的，手摸上去可舒服了!因为它是雌性，长得又漂亮，所以我给它取名为“妞妞”。

一开始，妞妞十分不习惯这里的环境，浑身上下抖个不停，于是，我用手去轻轻抚摸它，这一招果然有效。不一会，妞妞便大胆向外张望了。

有一次，我放妞妞出来熟悉一下家里环境，我在前带路，它在后面跟着我。这时，妞妞趁我不注意悄悄躲了起来，当我回头时，发现妞妞不见了，在仔细观察四周，才发现妞妞躲在花盆后冲我眨眼呢!

你们看它可爱吗?

我家有一只小狗，名字叫浪浪，我非常喜欢它。

浪浪其实是一只流浪狗，自从遇见我后，就再也离不开了。我走到哪里，浪浪就走到哪里。

就这样，它住进了我家，成了我家的一员。爸爸说：“这只狗到处流浪，就叫它浪浪吧。”

每天放学一回家，一进门，就看见一只浑身白绒绒的小狗，四脚朝天，懒洋洋的躺在地上，

好像在享受日光浴，它就是浪浪。浪浪看见我，连忙爬起来，像箭一样冲过来，围着我转来转去，

一双炯炯有神的大眼睛盯着我左瞧瞧右看看，可爱的鼻子闻闻我的左脚又嗅嗅我的右脚，还“旺旺”直叫唤。我蹲下来，逗着它玩。

浪浪也喜欢交朋友，但只要开饭了，它就会带着几个好朋友一起回家，共享美餐。

现在浪浪已经被送人了。不知它长大了没有？过得好不好？我多么想念它呀！

对人有益的动物有很多，例如有蜻蜓、青蛙等等。

There are a lot of useful animal, such as dragonflies, frogs and so on.

我们先说蜻蜓吧，它是益虫，它对人的益处可多了。它生活在小池子旁边，捕捉害虫。有些人，捉蜻蜓，捕蜻蜓，捉住后到处卖。我们应给立一个保护蜻蜓法，如果他们再敢捉蜻蜓，捕蜻蜓，就是知法犯法，交给警察叔叔处理。

We first dragonflies, it is good, it can be more benefit to the people. It lives in the small pool, to catch pests. Some people, to catch dragonflies, catching dragonflies, caught after selling everywhere. We should give up a dragonfly, if they dare to catch dragonflies, catching dragonflies, is to break the law, to the police uncle treatment.

青蛙也不例外，它也是捕捉害虫的能手，不过，它生活在庄稼附近的池子旁边，有时候，它也到庄稼地，旁边捕捉害虫，人们都称它保护庄稼的好帮手。有的小朋友，到池子旁边，捕捉青蛙，回家后，吃青蛙。我们应该在池子旁边树一个牌子，上面写着“保护青蛙，人人有责”，这样就不会有人捕捉青蛙了。

The frog is no exception, and it is also catch insects but it lives in crops near the pool, sometimes, it is also next to catch insects to crops, crop protection, people call it a good helper. Some children, into the pool, catching frogs, after coming home, eat a frog. We should be in the pool next to the tree a sign that read "protect the frog, is everybodys responsibility", so no one will catch frogs.

如果没有这些有益动物，害虫就会增多。这样，连农药和灭害灵都不行了。我们应给共同保护动物。

If none of these beneficial animal pests will increase. So, I can not even spirit pesticides and pest. We should to protect the animal together.

我记得小时候，我很怕狗，狗，这个动物。我家下面有几个家庭都养了狗，妈妈经常带我到下面玩，我一看见狗就觉得很害怕。可是我想来想去为什么要怕狗呢？这个问题我想了整整一个星期，总有一天我会知道的。

妈妈再一次带我去楼下玩。突然有一只小狗盯了我一下，我很害怕。我往后退了几步，那只狗的主人说：

“小朋友，你别跑，那只狗不会对你怎么样的。”

可我还是有点害怕。但是一想，不跑就不跑，我是人，它是狗，难道我还怕它不成，便停了下来。谁知，那狗盯了我一下，就调头跑了！我才觉得狗是一个很好玩的小东西。

后来，我竟然叫爸爸帮我买了一只小狗。真的不敢相信，我明明很怕狗的，为什么还叫爸爸买狗呢？

不管怎样，爸爸还是给我买来了一只狗，那只小狗好可爱，亲了我一下。

我看了一下这姿态，想道：好一个高傲的动物啊！

狗的高傲，更表现在它的叫声、吃相和表情中。

狗的叫声，音调严肃郑重呵斥。狗还可以看家门户。现在我知道：凡有生客进我家，狗就会大声地叫，那是在保护我这个家庭啊。

何况，他一看见我就摇尾巴，真可爱！

狗才是人类最忠实的动物啊，从此，我再也不怕狗了。

I like animals very much, such as horses, monkeys, cats, tigers and so on. But I like dogs best. Why? Because they are very cute and friendly.

我非常喜欢动物，比如马，猴子，猫，老虎等等。但是我最喜欢小狗。为什么呢?因为他们很可爱很友好。

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.

我有一只白色的小狗。它的名字叫波波。她是一只小母狗。她来自中国北京。她有一双大眼睛和一个小嘴巴。她穿着白色的衣服。 她经常在家里到处走。但是没关系。她喜欢吃冰激凌，我也是。当我吃冰激凌的时候，她就会很认真的看着冰激凌。所以我会给她一些吃。

I think Bobo is the cutest dog in the world.

我觉得波波是世界上最最可爱的狗狗。

导语：同学们喜欢小动物吗?如果喜欢，那么动物园是个不错的选择哦，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!

Here is a smallzoo. I like the tiger, although they are very ugly, but very imposing. Also has the national treasure panda, they are a little shy, does not dare to look at us. Who are those? they are elephants, you look at they to be huge, also has a point to be interesting. I do not like the lion, they compare the tiger clown, is also unimposing.

This is the small zoo.

【参考译文】

这里是一个小动物园。我喜欢老虎，虽然它们很难看，但很威风。也有国宝熊猫，他们有点害羞，不敢看我们。那些是谁?它们是大象，你看它们是巨大的，也有点有趣。我不喜欢狮子，他们比较了老虎的小丑，也没有威信。

这是小动物园。

瞧，那魁梧的身姿在走廊上大摇大摆地闲逛。仔细一看，原来是小狗呀!那雪白的，柔软的毛摸起来真舒服!真想上去来一个大拥抱!那小巧玲珑的眼睛宝石般嵌在眼眶中，让人一见就产生了爱慕之心。

小狗的跑步速度是惊人的。它起跑时，双脚着地，后面两只脚一蹬，便飞速向前跑。跑起来比电动车还快，快得达到了无人能敌的境界。

小狗的性格十分古怪。你哄它高兴时，它便静静地躺在你的身上睡觉;但你惹它“生气”时，它即使见你走过，也绝不吭一声。

小狗吃饭时十分可爱，可爱得让人发笑。他前两只脚着地，后面两只脚贴地，屁股坐在上面。低下头来舔几口水，接着便拼命地咬着骨头。

小狗的特点是——爱撒娇。“嗖”一个飞碟扔了出去。“小狗狗，快去把它捡回来吧。”它这时就会摇摇尾巴，仿佛在说“我不吗!”当你生气地走开时，他就乖乖地把它捡回来跟你一起走。

多可爱的小狗呀!

呼吁保护动物英语作文1

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.

呼吁保护动物英语作文2

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!

呼吁保护动物英语作文3

Animals Need Protecting

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 careBecause 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. WhyBecause 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 plant on the danger list. Slowly, the number of some animals in danger is growing.

With big eyes, there is an emergency ears like flying up to now. You guess what? Let me guess, is the rabbit.

A rabbits eyes like ruby, of course, I also gave a name to my rabbit called ruby. Because the rabbit eyes glistened like ruby.

Remember once, my mother took me to go for a walk, I bring my ruby went to the park. Ruby remembered it home for many years, because of the ruby grew up in the park, but his mom and dad have vanished into thin air, I also know that the rabbit is very poor, but I also didnt find its relatives. The rabbit ears soon ran off, may be sad, I had to chase her for a long time.

This is my favorite little animals. Smart, lovely ruby.

眼睛大大的，有紧急情况耳朵像飞的一样竖起来了。大家猜猜是什么?猜不到吧，就是兔子。

兔子的眼睛像红宝石一样，当然，我也给我的兔子起了一个名字叫红宝石。因为兔子的眼睛像红宝石一样亮晶晶的。

记得有一次，妈妈带我去散步，我带着我的红宝石来到了公园。红宝石想起了它多年的家，由于红宝石是在公园里长大的，但是他的爸爸妈妈却消失得无影无踪，我也知道兔子很可怜，但是我也没有找到它的亲人。兔子很快就竖起耳朵跑了起来，可能是伤心了，我追了很久才追到。

这就是我最喜欢的小动物。聪明、可爱的红宝石。

人们喜欢动物种类繁多，如猫、狗、鸡、鱼什么都多，但我最喜欢人类最忠诚的朋友——狗。

在我上小学时，我家养过一只狗，它是一条黑、白、棕三色毛混杂的狗。它是我妈的朋友送的，则来我家时，它趴下来还没有我有的拖鞋长，因为牙没有长全，我每天都要买两包纯牛奶给它渴。因为面生，刚来的一周它每天都躺在它

那简陋的窝里——那是一个纸箱子，里头放着一个小枕头。我每次一靠近它的窝，它总是阵阵乱叫，显出害怕的神情。就这样一天天过去了，它的毛渐渐长了，也愿意出来走走了，牙齿也慢慢都长上来了。有一天早上，起床后我发现我的拖鞋只剩下一只了，我在门后面找，床底下摸了摸都没有，就这样我穿着一只拖鞋在地上走，爸爸起来后还问我：“拖鞋怎么就只剩下一只了？”吃完早饭，我准备给小狗倒一点牛奶，当我走到它的窝前，竟发现我的拖鞋被它叼走当磨牙玩具了，我拿走我的拖鞋，发现它变得黏糊糊的了，我生气地用拖鞋在它的身上打了几下以示惩戒。

还有一次，它因为长大了，力气也大了，将它的铁饭碗打翻了，它着急了，想把碗翻回来，可是推来推去，可还翻不过来，它这时急了，将碗一直推，把客厅弄得一团糟，我回来后发现为件事，不想让妈妈知道，害得我把客厅重新收拾了一遍。

现在它被爸爸送回老家，我每次回去它都活蹦乱跳的，直立起后腿，亲爱地边吱吱啍啍地叫，边舔我的脸，好像在说：“小主人，你把我丢在这里，我可想你了，你带我回城吧……”

这就是我养的小狗，你喜欢它吗？

那天，我妈妈给我买了两只小鸭子。我很高兴，把两只小鸭子放在箱子里，听着它们的叫声，我的心情非常的好。

That day, my mother bought me two little ducks. I am very happy, the two little ducks on the box, listening to their voices, I feel very good.

第二天，我想让同学到我家看看我的鸭子，我给同学打电话，让他来。他看了鸭子，也觉得很好玩。我们把一只小鸭子放在地上，它向前走了几步就摔倒了，它抓了起来，又摔倒了，我们哈哈大笑。我们玩够了，就把小鸭子扔进了箱子里，去玩玩具了。

The second day, I want to have a look to my classmates my duck, I call for students, let him come. He saw a duck, and enjoy it. We put a duck on the ground, it went forward a few steps and then fell, it caught up, and fell down, and we laughed. We play enough, put the duck into the box, to play with toys.

下午，我和爸爸去看小鸭子，看见一只鸭子肚子朝上，翅膀和脚在抖动，它叫的声音很大，好像在哭一样。爸爸把小鸭子扶起来，小鸭子又倒了。我突然想起来我把小鸭子扔进箱子里的事，呀!我是杀人凶手呀!我哭了。小鸭子最后死了，我很伤心。

Afternoon, my father and I went to see the little duck, see a duck belly up, wings and feet in jitter, it sounds great, like crying. Dad put up little duck, duck down. I suddenly remembered that I took the little duck into the box,! I am a murderer! I cried. Little duck finally died, I am very sad.

从那时起，我就开始爱护小动物了。

From then on, I began to love little animal.

Although people are now said to protect animals, but there are a lot of people wrong-headed, continue to hunt animals, cause many animals to the road to extinction. Humans and animals to see, sold at the same time, made from animal skins coat... But these people ever think, if you are an animal, are hunted by humans, what would you think? Some people say: "Im not a animal." But now hunted animals, animals would like to have? No, never. Although some people know how to care for the animals, but they will only pretending to go to the education of others, and themselves but also damage the environment, killing animals, so enthusiastic tasting animal meat is delicious. Take the puppy around us, for instance, although not a national secondary other rare animals, but also our good partners, whether master how to use it, it still is very dedicated, but humans find dog meat is delicious, began to kill the dog.

Now, some animals have almost extinct, take the crocodile, for instance, although it is very fierce, but humans are more fierce. And in the eyes of human beings, crocodile skin can be made into the luggage, handbags, wallets, shoes and other goods. Because of some organs from animals has the prominent economic value, thus become a subject of human plunder use, become the main factor of extinct animals. So the crocodile, has now become almost extinct animals.

Animal friends, a lot of destruction of human will have serious adverse consequences, ecological environment caused by serious imbalance, so that the human living environment is destroyed. Eliminate animal, is to eliminate human oneself, if one day the animals in the world are gone, that human can survive? To protect animals, cherish this nature of every creature! Let us start from now, to protect animals, make the world a better place!

虽然人们现在都说要保护动物，但是还有很多人执迷不悟，继续猎杀动物，导致许多动物都走向了灭绝的道路。同时人类还拿动物来观赏、卖钱，用兽皮做大衣……但这些人有没有想过，如果你是一只动物，却遭到了人类的猎杀，你会怎么想?有些人说：“我又不是动物。”但是现在人类大量捕杀动物，动物会愿意吗?不，永远不会。有些人虽然知道怎样去爱护动物，可是他们只会假惺惺地去教育别人，而自己却照样破坏环境，猎杀动物，照样兴致勃勃的品尝动物鲜美的肉。就拿我们身边的小狗来说吧，虽然不是国家一二级别的珍贵动物，但也是我们身边的好伙伴，不管主人怎么使唤它，它仍然很兢兢业业，可是人类发现狗肉鲜美，就开始捕杀小狗。

现在，有些动物已经快要灭绝了，就拿鳄鱼来说吧，它虽然很凶猛，但人类更凶猛。而在人类的眼中，鳄鱼皮可以制成行李箱，手提包，钱包，鞋等物品。就是因为有些动物身上的器官具有突出的经济价值，由此成为被人类掠夺利用的对象，成为动物灭绝的主要因素。所以鳄鱼，现在已经成为快要灭绝的动物了。

朋友们，动物的大量毁灭对人类将产生严重的不良后果，造成生态环境严重不平衡，从而使人类的生存环境遭到破坏。消灭动物，就是在消灭人类自己，如果有一天世界上的动物全都消失了，那人类还能生存吗?要保护动物，珍惜这自然界里的每一个生灵吧!让我们从现在做起，保护动物，使世界变得更加美好吧!

A triple bacon cheeseburger seems like a heart attack on a plate.

三层奶酪咸肉汉堡感觉吃完很容易让人突发心脏病。

So how can polar bears thrive on their version, seal blubber?

那么,北极熊是如何处理这些高热量食物的呢?

Turns out theyve stocked up on genes that let them clear fats from their blood.

结果显示它们储存在遗传基因里的信息使得它们能够清除血脂。

Thats according to a study in the journal Cell.

这是根据《细胞》杂志上的一篇研究得出的结论。

Polar bears are well adapted to life on the sea ice.

北极熊非常适应在浮冰上的生活。

Up to half their body weights fat, which gives them extra insulation and buoyancy, and provides them with a ready source of energy.

几乎占它们身重一半的脂肪足以使它们保暖并且维持体力，提供给它们一种易转化的能量。

But how can an animal so fat also be so fit?

但一种动物怎么能又胖又健康?

Researchers compared the genomes of polar bears with those of brown bears, and found that polar bears have accumulated genetic changes that boost their heart health and fat metabolism.

研究人员们通过比较北极熊和棕熊的基因，发现北极熊的基因组中积累了不少有利于心脏健康和脂肪代谢的遗传突变。

One gene in particular, called ApoB, helps move cholesterol out of the blood—where it causes problems in humans—and into cells.

特别是编码为载脂蛋白B的基因有助于清除血液中对人类有害的胆固醇转变成细胞代谢。

These genomic changes happened quickly, evolutionarily speaking.

这些遗传变化从进化的角度来讲发生的十分快。

Polar bears and brown bears diverged from a common ancestor less than half a million years ago.

北极熊和棕熊都来自于同一个祖先，它们是在大约50万年前左右开始向不同分支进化。

But if that seems super speedy, the ability to digest lactose didnt spread through human populations until we domesticated cows, just 10,000 years ago.

但是如果这种变化看上去十分快速的话，消化乳糖的酶逐渐进化到人类各个种群中也还是发生在大概1万年前我们可以驯化乳牛之后。

A moooving testament to the power of natural selection.

这是自然选择力量的证明。

在我爷爷家里，有一只可爱的小狗叫卡卡。

卡卡是一只巧克力色的小贵宾犬。

它全身的毛都是卷卷的，眼睛水灵灵的，又大又圆，漂亮极了。

它的迷你黑鼻子总是湿漉漉的，好像一卷即将融化的黑色小奶油。

它的嘴巴长长宽宽的，舌头老是在舔着自己的小鼻子。

它的耳朵犹如一对小扇子，时不时摇一下，可爱极了。

卡卡是只聪明的小狗，每次我去爷爷家，才走到门口，卡卡就在里面汪汪叫着欢迎我了。

卡卡最爱玩捡球的游戏，我故意把球丢到桌子下面，想为难一下它，没想到它迅速跑去，一扭一扭地钻进去，把球叼了出来，放在我脚边。

卡卡还会双脚直立转圈圈。

每到吃饭的时间，第一个等候在饭桌前的一定是卡卡，等到大家都坐下了，它就用可怜巴巴的眼神看看我，仿佛在说："我饿了，给我点吃的吧。" 我和卡卡是好朋友，常常摸摸它的头和背，它就摇摇尾巴表示开心，还用湿漉漉的小舌头舔我的脸。

最喜欢我挠它的肚皮，每到这个时候，卡卡就四脚朝天，全身放松，十分享受。