动物奇闻趣事

精品文档-下载后可编辑动物奇闻趣事Akangaroocannotjumpifitstailisliftedofftheground.Itneedsitstailforpushingoff.

AccordingtotestsmadeattheInstitute[研究所]fortheStudyofAnimalProblemsinWashington,D.C.,dogsandcats,likepeople,areeitherright-handedorleft-handed,thatis,theseanimalsfavoreithertheirrightorleftpaws[爪子].

Migrating[迁移的]geeseflyinaVformation[队列]tosaveenergy.Agoose’swingsflutter[扇动]theairandleaveanaircurrentbehind.Intheflyingformation,eachbirdisinpositiontogetaliftfromthecurrentleftbythebirdahead.Itiseasiergoingforall,excepttheleader.Duringamigration,geeseusuallytaketurnsintheleadingposition.

Anelectriceel[电鳗]canproduceelectricityofmorethan600volts[伏],3timesmorepowerfulthanahouseholdoutlet.Itnotonlyusesthispowertokillitspreybuttolocateitaswell.Thoughitisbornwitheyes,itwillbeblindafteritgrowsup.Itfindsfoodbyitselectricityinthesamewayasmanusesradar[雷达].

Ahummingbird’s[蜂鸟的]averageweighislessthanapenny.Ithasabodytemperatureof111degreesandbeatsitswingsmorethan75timesasecond.Anewbornhummingbirdisasbigasabumblebees[大黄蜂]anditsnest’ssizeisasbigasawalnut.Thehummingbirdistheonlybirdthatcanflybackward.

Thepenguin[企鹅]hasaorganaboveitseyesthatcantransformsaltwaterintofresh.Thepenguinhasonlyonemateduringitslifeandissuchaconscientious[有责任心的]parentthatitwill,ifnecessary,starve[饿]todeathinordertoprovideitschildrenwithfood.

Thefemaleknot-tyingweaverbird[织巢鸟]willrefusetomatewithamalewhohasbuiltashoddy[劣等的]nest.Ifthemaleisrefused,itmusttakethenestapartandcompletelyrebuilditinordertowintheaffection[喜爱]ofthefemale.

Thoughthegiraffe’sneckisabout9feetlong,ithasthesamenumberofvertebrae[脊椎骨]asamouse’s—seven.Thegiraffe’stongueis18incheslong.Itcanopenandcloseitsnostrils[鼻孔]atwill.Itcanrunfasterthanahorse,andmakesalmostnosound.

Ahorsefocuses[聚焦]itseyebychangingtheangleofitshead,notbychangingtheshapeofthelensoftheeye,ashumansdo.

Itisthefemalelionwhodoesmorethan90percentofthehuntingwhilethemaleisafraidtoriskhislife,orsimplypreferstorest.

TherearenopenguinsattheNorthPole.Infact,therearenopenguinsanywhereintheNorthernHemisphere[北半球]exceptinzoos.Allseventeenvarietiesofthebirdsarefoundbelowtheequator[赤道],primarilyinAntarctica.

Arcticterns[燕鸥]thatarefoundinNorthAmericaandtheArcticmigrateseachyearasfarsouthasAntarcticaandback,aroundtripofover18,000miles.Thisisprobablythelongestmigrationflight.

如果袋鼠的尾巴离开地面，袋鼠就跳不起来。它要靠尾巴推动才能离开地面。

华盛顿特区动物问题研究所的试验表明，狗和猫像人一样，也有右撇子和左撇子——即有些喜欢用右爪，有些喜欢用左爪。

迁移中的大雁群成“V”字队形飞行是为了节省能量。一只大雁的翅膀扇动空气，在身后留下一股气流。在飞行队列中，每一只大雁都得到前面的雁产生的气流的升力。这样，除了领队以外，所有的雁飞起来都省力些。一次迁移飞行中往往有几只大雁轮流领飞。

电鳗能释放出超过600伏的电，是家用电灯电流的3倍。它不仅用这一电力杀死猎物，还用它寻找猎物。电鳗虽然出生时有眼睛，但是长大后会变成瞎子，它像人使用雷达那样通过放电寻找食物。

蜂鸟的平均体重比一枚一便士的硬币还轻。它的体温达111度，翅膀每秒种要扇动75次以上。孵出的蜂鸟只有大黄蜂那么大，其巢只有核桃那么大。蜂鸟是唯一能倒退向后飞的鸟。

企鹅眼睛上边有个器官能将盐水变成淡水。企鹅一生中只有一个配偶，对子女很尽心，为了给孩子们找食甚至不惜自己饿死。

会打结的雌织巢鸟不肯同造窝马马虎虎的雄鸟。如果雄鸟被拒绝，它必须将巢拆掉重新造一个，以赢得雌鸟的爱情。

尽管长颈鹿的脖子约有9英尺长，但它和老鼠的颈椎骨的数目一样，只有7块。长颈鹿的舌头有18英寸长。它能任意开闭鼻孔，能跑得比马快而几乎不发出任何声音。

马通过转动头的角度使眼镜聚焦