我最喜欢的动物是狗狗英语作文【推荐20篇】
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+ 加入清单我最喜欢的动物啊,说它是动物也不算动物,说它不是动物可又勉强算得上动物,它就是我的Q宠宝贝——情缘。
记得那时才放寒假,我到姐姐家玩,上网时无意看到了这个活动的公告,这是个砸蛋活动,随意砸了金蛋,没想到还真砸中了,是个QMM,高兴地一塌糊涂啊!那几天都没有伤心过!可惜姐姐没砸中,可能是我运气好吧,嘻嘻!
它是一只小企鹅,头上戴着一个大蝴蝶结,脖子上系着一条长长的粉红色围巾,那胖胖的身子,无害的面容,水灵灵、亮晶晶的大眼睛,好可爱,好可爱!好令人喜爱啊!
自从开始养它,就没让我省心过,一会儿饿了,一会儿脏了,可又不能怠慢它,不然会生病的呢!有次我上英语课外班回来,咦,它怎么瑟瑟发抖啊?我突然有一种不祥的预感,连忙打开宠物社区,呀,它生了大病!我急忙给它看病吃药,心里着急得很呢!见它吃了药退了高烧,我才松了一口气,安下心来,可不能让它死啊,我发现自从养了它,我越来越辛苦了,越来越喜欢它了。呵呵!
现在,它已经十五级了,越来越美丽,越来越可爱了,好喜欢好喜欢它啊
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篇1:我喜欢的小动物小学
全文共 404 字
+ 加入清单喜欢的小动物有很多,如:可爱的小鸡、小猫和小白兔,还有会学人说话的鹦鹉,但是我最喜欢的还是我的忠实伙伴——小狗,我给它取名叫欢欢。
小狗全身的毛是白色的,像一只小绒球。小狗的鼻子黑黑的,像一个小黑点镶嵌在小绒球里,别看它这么小,鼻子可特别灵敏,一闻到家里有生人的味道,就会“汪汪”直叫。小狗的眼睛大大的、亮亮的,像两颗宝石嵌在小绒球里。小狗的嘴巴小小的,吃起东西来一动一动的,特别可爱。小狗的脚短短的,走起路来却是挺快的,在我家的地毯上留下一个个梅花印。小狗的尾巴短短的,走起路来尾巴一跳一跳的,可爱极了。小狗性情温顺,不高不低的叫声也很斯文,给人一种文雅的感觉。
小狗是我的好伙伴,是我的知心朋友。每天它好像知道我放学的时间似的,我一开门,就可以看见小狗早已站在门口摇着尾巴迎接我。随后,小狗还会叼着拖鞋放在我面前。而我会拿出小狗最喜欢吃的狗粮,当作给它的奖励。
我非常喜欢我的小狗,因为它每天都能给我带来快乐。
篇2:最喜欢的一节英语课作文700字
全文共 660 字
+ 加入清单还记得上次上的一节英语课,这节课并不是我们的英语老师给我们上,而是另一位英语老师。
据我所知,这位老师就是我们学校的一位英语老师,这位老师姓王,是我们楼上七年级五班的英语老师。
以前听五班的同学说过,他们的英语老师很好,很和蔼,就一直很想见一见,那天上课的时候,终于见到了。
王老师刚走进教室,我就觉得果然名不虚传,能让这样一位老师教我,哪怕只有一节课,我都会感到非常荣幸。所以,我的心情异常的激动,心里非常紧张:毕竟是第一次上这位老师上的英语课,并不知道这位老师是怎样讲课的,自己能否听得懂?我心里非常的没底。
这位老师讲课竟然全用英语讲,刚上了一会,我就非常惊讶,一节课下来我更是非常的惊讶,一节课下来,都是流利的英语,一句汉语都没有。不止我,其他同学下课后都这么说。
虽然全是英语,我还是能听得懂,并且一节课进行的非常顺利。
王老师还与我们做了一个小游戏。这个游戏的规则是:老师大声说单词,我们就小声说单词;老师小声说单词,我们就大声说单词。
有新进行的非常顺利,都的同学们哈哈大笑,我也在其中找到了无限的乐趣。
除了这个小游戏,王老师还给我们带来了一个抢答游戏,用到的词语都是本节课所学到的,让我们说出这些词的反义词,想到就立刻站起来说。
我们也都非常积极,都站起来抢答,有时候一下子站起来一半多的同学,而我也站起来很多次。
时间飞逝,不知怎的,不一会儿就下课了,我还没有上够这节课呢!
我最喜欢的就是这节课了,因为这节课气氛活跃,老师呢,既漂亮又和蔼,而且还很幽默,这那倒不是很好的一节课吗?
篇3:三年级英语动物日记
全文共 806 字
+ 加入清单I like the program" Animal World" . First of all, I like animals, especially small animals. Secondly, the host is able to make the program lively and interesting. Thirdly, through this program I know a lot of things that I havent known before. I gain some knowledge about animal life, such as, different lives of various kinds of animals, the relationship between people and nature, people and animal, and the importance of animal protection.
I want to say that animals are part of nature as we are. They can not be separated from the humans. We must keep nature in balance.
Please give your love to animals. Stop killing them.
我喜欢“动物世界”这个节目。首先,我喜欢动物,尤其是小动物。第二,主持人把节目办得既生动又有趣。另一方面,通过这个节目,我知道了许多以前不知道的关于动物生活方面的事情,例如不同动物的不同生活习惯,人与动物之间、人与自然之间的关系,还有保护动物的意义。
我想说的是,动物是自然的一部分,它们与人类不可分割,我们一定保持生态平衡。
请把你们的爱给它们吧,不可以杀害它们。
篇4:我最喜欢的动物英语作文Myfavoriteanimal
全文共 1007 字
+ 加入清单My favorite animal is a chicken.
As it happens, my home downstairs is no. 307 to raise a few chickens. Every day, we pass these chicks are partial his head to see us.
The chicken body furry and cute. A yellow feathers like wearing a yellow dress. The chicken has a pair of sharp mouth. Round eyes also pretty mentally?
I dont see their ears, but the chicken could not have no ears. If no ears, that we walk past, how they head, look at us with a partial?
Mother said that newly hatched chicks also can only eat a small grain of rice, cant eat corn or maize, and gave them drink water regularly. If there are bugs to eat them. Theyll grow more air.
How much I love these cute chicks. But mom and dad said cant keep now, dont keep good, they will die.
恰好,我家楼下307号就养了几只小鸡。每天我们经过时,这些小鸡都偏着脑袋看我们哩。
小鸡全身毛茸茸的,很可爱。一身黄黄的羽毛像披着一件金黄的礼服。小鸡有一双尖尖的小嘴。圆圆的眼睛看人时还蛮有精神的呢。
我没看到它们的耳朵,但是小鸡不可能没有耳朵。如果没有耳朵的话,那我们走过去时,它们怎么会偏着脑袋朝我们瞧呢?
妈妈说,刚孵出的小鸡还只能吃小米粒,不能吃谷子或玉米,还要经常给它们喝水。要是有小虫子给它们吃,它们一定会长得更神气。
我多喜欢这些可爱的小鸡呀。但是爸爸妈妈说现在还不能养,不养好的话,它们会死的。
篇5:喜欢的动物
全文共 445 字
+ 加入清单我的小乌龟
上个月,我买了一只小乌龟,它的鼻子尖尖的、嘴巴大大的,圆圆的龟壳中间有13片鳞斑,四周有24片。它胆子很小,很害怕人,我抓住它时,它就把头缩进龟壳里,要是把它放出来,它就会很快地爬到暗处躲起来。
小乌龟第一次吃东西的情景让我到现在还难以忘记。它好几天没吃东西,我担心它会饿死。刚买上它的时候因为不熟悉我家的环境,所以不敢去吃食物,我想尽办法让它进食,可它就是不吃。有一天,我终于想出了一个好办法。听妈妈说小乌龟喜爱吃小鱼,我买了一些小草鱼放进小乌龟的缸里,刚开始它看起来有点害怕,一动不动地呆在水里,一分钟、两分钟……,一小时、两小时……,一条小鱼靠近了它的嘴,突然,它张口咬向小鱼,一瞬间小鱼已被它咬住了,我松了口气。小乌龟终于能吃饭啦!我高兴极了。
通过查书和看《动物世界》我了解到,平常龟类可以活到上百岁,海龟的寿命更可以达到上千岁呢!虽然它们的行动有点慢,但它们有很强的忍耐力和毅力,难怪它可以“跑”得比兔子还“快”呢!这也是我要像乌龟学习的地方,同时养乌龟也锻炼了我的恒心。
篇6:关于喜欢的小动物英语作文
全文共 854 字
+ 加入清单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!
篇7:小学生关于我最喜欢的动物英语作文
全文共 1609 字
+ 加入清单I like small animals have kitten doggie and so on, but my favorite is I buy small crabs.
Remember it was a Sunday, Zhao Yifan to seek me to play, we go out and see there is an old woman in sell crabs, we went to the old woman beside him, said: "grandma, we are going to two crabs." grandma gave us two, we returned home I hurriedly put a basin of wash in clean water, put the crab to the inside, Im afraid crabs dont adapt to the environment, and to put too many POTS I pick up the small stone on the beach, I carefully observe small crabs, see them as a battle-hardened general, commanding, a pair of round eyes can spirit, I touch it, its big claws waving up immediately.
One day, I went to see crabs found that there are many soil and leaves in the water, I will give it in water, holding it, I thought I will hurt it, will try very hard to of struggle, after a while it has no strength, I good the water was going to put it back, it with the tongs lived my fingers, I how to jilt also to throw off, I had to put it in the water, "it was slowly loosen the pliers.
I very like my little crabs, because it brings me a lot of fun, outside my study is to accompany me to play, it let me grow a lot of extra-curricular knowledge.
我喜欢的小动物有小猫小狗等等,但我最喜欢的还是我买的小螃蟹.
记得那是一个星期天,赵逸凡来找我玩,我们一出门便见有一位老奶奶在卖螃蟹,我们走到老奶奶身旁说:"老奶奶我们要两只螃蟹."老奶奶给了我们两只,我们回到家我连忙把一个脸盆洗了洗放进净水,把螃蟹放到了里面,我怕螃蟹不适应环境,又往盆里放了许多我在海边捡的小石头,我仔细观察小螃蟹,只见它们像久经沙场的将军,威风凛凛,一双圆溜溜的眼睛可精神了,我一碰它,它的大钳子立刻就挥舞起来.
有一天,我去看螃蟹发现水里有许多土和树叶,我就给它换水,我捏着它,它还以为我要伤害它,就拼命的挣扎,过了一小会它没有力气了,我接好水正想把它放回去时,它用钳子夹住了我的手指,我怎么甩也甩不掉,我只好服输把它放到水里,它这才慢慢地松开了钳子.
我非常喜欢我的小螃蟹,因为它给我带来了许多乐趣,在我学习之外都是它陪我玩,让我增长了许多课外知识.
篇8:关于动物的英语
全文共 1417 字
+ 加入清单My favourite animal is little dog.Because its very lovely.And dogs are friendly to people,they are peoples good friends.When you are daughter,they can save you.They can hear the people cant hear things.its very useful,arent they?The dogs is very loyal to people .Are you agree with me?
关于动物的英语作文二
I have a very beautiful cat.Its colour is white or yellow .its name isHaahua .Ithink it is my favourite cat .she likes sleep playing with the bell .she love ratting meat ,Though it is a kind of animals ,I treat it as my friend .sometime I give her some fish or pork to eat .When she sees the fool she begin to cry miao miao .As if she is very hungry and thirsty .Wherever I amwalk she follws me .
How happy I am !How nice my friend is !I love her more and more .
关于动物的英语作文三
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9:我最喜欢的动物——小白兔
全文共 388 字
+ 加入清单文:陈俊宇
我最喜欢的动物是小白兔,它的身子软软的,耳朵是耸拉下来的,尾巴又圆又短,像一个小毛球。
我有养一只小白兔,它的名字叫白雪,才刚出生两个月呢!它虽然还是“兔婴儿”,但已经学会了淘气,如果一天不放它出来自由活动,它就用脚“踢”笼子的门,让你被吵得无法入睡,这时你必须放它出来,放它出来后还不会心满意足,非要你用一片胡萝卜补偿它!
它要是开心,就会在笼子里撒娇,你绝对会心软,把它抱在手里,抚摸它那软软的皮毛。突然!它从你手上一跳,跳得半米多高,面对着你,似乎在说:“主人,我厉害吧!像不像超人?”然后,它并不是跳在地上,而是落在你脚上,你的脚还会微微发痛,但你绝不会责打它。
它要是不开心,不论你放不放它出来都没有用,也无论给它吃多少胡萝卜也没用,但你给它吃多少片胡萝卜,它都会从容不迫的吃下去啦!
你们现在是不是也喜欢上兔子啦?它是那么生气勃勃,活泼、可爱!是我最喜欢的动物!
篇10:喜欢的动物
全文共 500 字
+ 加入清单我的动物朋友
我的好朋友叫乐乐,它是一只小狗,而且是一只小花狗。
它长着长长的耳朵,短短的腿,细细的尾巴还在不停的摇啊摇,只怕别人不注意它。一只白眼睛一只黑眼睛还老被耳朵遮着,因为是一只花狗,所以身上的毛除了白色的就是黑色的。从出生到现在只有半年的时间,所以它还很小,很淘气,又很活泼,老是逗我的全家人开心。姥姥喜欢安静,可偏偏乐乐喜欢热闹。每次我们和舅舅家回去的时候,乐乐就会叫个不停,跳个不停,还会跑过来搂搂这个人的腿,拦住那个人的跑,非常高兴,可就是不敢进姥姥的屋,只能在门口汪汪的交割不停,走个不停,弄的我们只好出到门外说话。每次我和哥哥玩球的时候,乐乐都会跑过来和我们一起玩,一块抢球。球已经被它弄坏两个了。虽然如此,我们还是很愿意和它一起玩。姥姥说乐乐不干活,光吃饭,而且饭量还很大,就知道玩,全村没有人不知道乐乐的。成天东家跑西家串。姥姥只好每天到大街上去喊,最后没办法只好把它拴了起来,不过我们回去还会把它偷偷的放开。就是这么一条只知道玩的狗,过年的时候,还是被别人给害死了。我们全家都很伤心,姥爷还挖了一个坑,把它埋在了大门口的桂花树下。我的朋友乐乐就这样的走了,我非常的想念它,乐乐!
篇11:我喜欢的动物作文
全文共 528 字
+ 加入清单我家有只小花猫,叫的又好听,长得又漂亮,于是我们叫它咪丽。
咪丽的眼睛绿莹莹的,活像两颗绿宝石,它的耳朵是三角形的,和我们小朋友玩的三角形积木一样,还会灵活的动呢。它的鼻子嗅觉可灵敏了妈妈一次买来一条鱼,准备中午红烧着吃,谁知咪丽闻到了鱼的味道,趁着妈妈去上厕所,把鱼吃光了。它吃的那么干净、快速。妈妈发现了,也不去责打它,它是那么生气勃勃,天真可爱。咪丽长着一身洁白的毛,没有一点儿杂色,它的尾巴长长的,它就是靠尾巴来保持身体平衡的。它还经常在你写作业时在本子上,踏印几朵小梅花。
咪丽非常尽职,它每次发现老鼠,都会把老鼠消灭干净,就算老鼠钻进洞里,它也会屏息凝视地守住洞口,非把老鼠等出来不可。有一次,一只老鼠从洞里爬出来,左顾右盼,见没有危险,就爬上桌子大口的吃起花生米。这一切都被咪丽看在眼里恨在心里。它决心拿这只老鼠当它的午饭——它中午还没吃饭呢。老鼠吃饱喝足了,准备抬走其余的花生米。这时危险已经悄悄靠近它——咪丽早就神不知鬼不觉地趴在了老鼠身后,它弯着后腿,前腿蹬地准备着。突然,咪丽像支离弦的箭,以迅雷不及掩耳之势风弛电掣地跳过去扑住老鼠。老鼠还来不及弄清怎么回事,就被咪丽吃到了肚子里。
我喜欢我的小猫,它带给我无穷的欢乐。
篇12:我喜欢的动物作文400字
全文共 492 字
+ 加入清单我家养了两只小狗,一只白色的,一只灰色的。白的那只叫“小美”,灰的那只叫“小可爱”,他们非常机灵,也非常贪吃。
当我拿食物喂它们吃的时候,我走到哪里它们就跟到哪里,有时候还会冲过来咬我裤子。我一放下食物,它们就争着抢着吃起来。“小美”不管三七二十一直接扑到碗里大口大口吃起来。“小可爱”则比较注意形象,像绅士一样在旁边细嚼慢咽,生怕噎着自己。它们吃食物非常挑剔,有时候遇到不合胃口就一口不吃,碰到它们喜欢的肉拌饭之类的食物时,就会吃得一点也不剩,连碗也舔得干干净净,真是挑食!
“小可爱”比较胖,小脑袋瓜上长着两只尖尖的耳朵。一双又圆又黑的大眼睛,水汪汪的,灵活的黑眼珠不时地转来转去,好像两颗会动的黑葡萄。它的身体比较矮小,但它会像人一样凌空站起来。尾巴摇呀摇向我表示非常友好。
“小美”长得比较高,身姿苗条,有时候会跳起优美的舞姿,它的毛是白色的,绵乎乎的,背上还长着一颗灰色的爱心桃,真是一个漂亮的狗姑娘!
它们非常可爱也非常听话,总是让我念念不忘,当我关上门离开他们时,它们还会从门缝里看着我,嘴巴汪汪地叫,提醒我不要忘记他们这两个忠实的朋友。哦,我可爱的狗朋友啊,我怎会忘记你们呢?
篇13:写动物的英语作文
全文共 496 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14:我喜欢的动物作文400字松鼠
全文共 542 字
+ 加入清单我一向讨厌动物,可是这一次却改变了我的看法。
去年冬天,我去了姥姥家,姥姥带我去爬山。半山腰处,我突然听到一种陌生的动物叫声,低头一看,哇,一只松鼠!它躲在一个树桩旁,我想,它的家一定是被伐木人无情地摧毁了,于是我把它带回了家。
它有着一条毛绒绒的大尾巴,两颗宝石似的圆溜溜的大眼睛,棕灰色的皮毛像一座座小山堆积着,让人想去靠近,想去躺在它身上睡大觉。
我把它关在了笼子里,给它麦片和玉米吃,它一看见吃的,就使劲地往笼外钻,用爪子抓玉米吃,它没吃饱的时候还会叫几声,好像在对我说:“小主人,我还没吃饱呢!”这时,我就会再抓一把玉米给它吃。看它吃得开心,我也特别快乐。
这个冬天是寒风刺骨的,我的这个小伙伴被冻得浑身发抖,我把它放在炉子旁,它就一直待在那里,一动不动地看着我,好像一刻也不想让我离开它。我只好把它放在姥姥家的空房间里,它可开心了,在墙上左爬爬、右爬爬,真是生气勃勃、天真可爱!
漫长的冬天终于过去了,春姑娘来了,我决定送它回家,我把它抱回了那片森林,它叫了几声,好像在说:“再见了,我的朋友,以后要来看我。”说完就钻进了树洞,丢下几颗松子,似乎是送我的礼物。
如今,我已经离开了乡村,不知道那只松鼠过得怎么样了。我确实还有点想它了。
这就是我和松鼠的奇遇,从此以后,我开始喜欢动物了。
篇15:含动物的英语谚语
全文共 897 字
+ 加入清单You cannot catch old birds with chaff.用粗糠捉不住老鸟。
you can lead a horse to water , but you cannot make him drink牵马到河易,逼马饮水难。
Unable to fly ,in vain the bird flaps his wings. 鸟儿不会飞,拍翅也枉然。
Trusted aids are eliminated when they have outlived their usefulness. 兔死狗烹。
The fox mourns the death of the hare. 兔死狐悲。
Pigs may fly,but they are very unlikely birds. 猪儿纵会飞,终究不是鸟。
One swallow does not make a summer. 一燕不成夏。
One swallow does not make a spring. 孤燕不报春。
Fine feathers make fine birds. 人要衣装,马要鞍。
Early bird catches the worm。早起的鸟儿有虫吃。
Each bird loves to hear himself sing. 鸟儿都爱听自己唱。
Birds in their little nests agree. 同巢之鸟心儿齐。
Better be a free bird than a captive king. 宁为自由鸟,不作被困王。
A running horse needs no spur. 奔马无需鞭策。
A rabbit isn’t to be harnessed. 兔子驾不了辕。
A horse may stumble on four feet. 马有四条腿,亦有失蹄时。
A good horse cannot be of a bad colour. 好马不会毛色差。
A bird is known by its note, and a man by his talk. 听音识鸟,闻言识人。
篇16:我最喜欢圣诞节英语
全文共 1890 字
+ 加入清单Christmas is a time for miracles.It is also a time when the dull things of daily life and the forecast of human hature gives way to a spiritual awakening.Allow me to share with you one truly wonder of Christmas.
Our miracle story comes from an incident that occurred in Flanders, Belgium, at the dawn of World War I. On December 24th ,1914, German and English troops faced each other from the relative safety of their ditches across which no man’s land lying between them. Suddenly, the silence was broken, not by gunfire, but by the strains of Silent Night arising from the German position. It wasn’t long before the English troops responded with a Yuletide hymn of their own. Then an amazing sight surprised the eyes of the English soldiers. A German soldier holding a small tree arranged with lighted candles began to walk across the land toward the English lines. This miraculous scene occasioned the declaration of a truce followed by English and German troops greeting one another, exchanging small gifts and singing songs of Christmas. Word of this incredible phenomenon reached the High Command of both sides.
On Christmas Day, both armies moved from their positions to engage in the killing of war at other battlefields. However, on Christmas Eve 1914 on a field in Flanders, there was Peace on Earth.
Christmas is a truly amazing phenomenon. The day and season perpetuate a miraculous, historical event as an annual presence that challenges an often rough, cruel, and egotistical creature — the human being — to become open and amenable to their Creator’s vision. The great miracle of Christmas continues in the performance of humane acts, moral honesty, and in the spiritual awareness of millions struggling to lead a life of grace.
圣诞节对全球的影响:
在2012年,在全球经济不景气的情况下,全球的圣诞经济并不乐观。虽然较平常确有不小幅度的升温,但远远低于历史水平。尤其是类似希腊这样陷入债务危机的国家,经济本身并没有复苏,购物的人们只能转转无奈离去。英国、加拿大、新加坡、美国等国由于经济好转,在商家的大力促销下圣诞经济快速回升。
篇17: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。
篇18:我喜欢的动物
全文共 204 字
+ 加入清单黄曼伊
我不喜欢老虎的凶猛,也不喜欢大象的高大,我也不喜欢猴子那样调皮,我喜欢可爱、温和的小白兔。
小白兔的毛洁白洁白的,它的耳朵长长的,尖尖的。它的眼睛就像两颗红宝石,鲜红鲜红的。小白兔的嘴巴是三瓣形的,喜欢吃的东西是胡萝卜和青菜,吃东西的时候咯吱咯吱的,好像它吃的很是津津有味似得。小白兔的腿也很特别,前面两只是短的,后面两只是长的,这样它就可以跑得很快,跳得很远。
我喜欢小白兔的可爱和温顺,难道你不喜欢吗?
篇19:我喜欢的小动物作文300字
全文共 350 字
+ 加入清单我喜欢我家的小黄狗。
它胖胖的身子,大大的耳朵,浑身缎子似的黄毛又长又软,在阳光下闪闪发光。一对骨碌碌直转的眼睛,透着聪明和机灵。长尾巴总是向上翘着,还不时地摆来摆去,显得一幅悠闲自得的样子。
小黄狗可通人性了,还是我家的小侦探呢!有一次,它带着爸爸刚从叔叔家抱来的小花狗出去玩,在路上可能遇到它的伙伴,光顾着聊天,忘记了照顾小花狗,小花狗可能迷路了,找不到家了。当小黄狗跑回家时,奶奶看见小花狗不见了,急得满头大汗,四处寻找,也没有找到,最后奶奶想到了小黄狗,亲切地对小黄狗说:“你能带我去找小花狗吗?”小黄狗好像听懂了奶奶的话,就乖乖地带路,小黄狗东张西望,耐心的寻找着小花狗。最后在一个很偏僻的墙角下找到了小花狗。这时,奶奶笑了,小黄狗也摇头摆尾,显得很神气的样子。
这就是我们家的小黄狗,你喜欢吗?
篇20:我喜欢的动物作文500字
全文共 479 字
+ 加入清单我喜欢的动物是一个胆小鬼,小小的身材,带着一身盔甲,还有斑纹,缩起来就像是一块绿色的石头。你猜它是谁?没错,它就是缩头乌龟。
一天放学,我和哥哥回家,看到学校门口有卖乌龟的,我拉着哥哥的裤子让哥哥给我买一只乌龟。哥哥就给我买了一只乌龟和一袋龟食。
回到家,我拿来了一个水缸,我把乌龟倒了进去,往里头装了一点水。小乌龟游来游去,非常开心。过了许多天,我就跟小乌龟成为了朋友。
一天中午,我吃完饭,来到客厅,看到小乌龟趴在水面上,一动不动。我就去拨弄小乌龟,小乌龟还是一动不动。我哭了起来,哭声引来了爸爸。爸爸说:“怎么回事?”我哭着鼻子说:“乌……乌龟不会动了。”爸爸看了看乌龟,急忙换水、喂食,不一会儿,生龙活虎的小乌龟又回来了。
我家的小乌龟还是个电视迷呢!我在楼梯边拿遥控按了一下,电视剧就出来了。小乌龟听到声音就趴在水缸上一动不动,我走到它面前,它拿手指指摆摆,仿佛在说:“挡到我啦,快让开。”我蹲了下来,看着小乌龟的样子,笑得前仰后合。我叫上了全家来看小乌龟,全都哈哈大笑起来。小乌龟的神情变了,仿佛在说:“不许笑,不许笑。”
这就是我家的小乌龟,它很可爱吧!