它们可能是在蜥脚类动物觅食时被误食的，没有真正的用途。
It could be they were accidentally ingested as the sauropods foraged for food, that they served no real purpose.
综述植物次生合物防卫植食性哺乳动物觅食的研究进展。
The research progress in the chemical defense of plant to mammalian herbivore was reviewed in this paper.
综述了社群学习对植食性鸟类和哺乳动物觅食行为的作用，并述评了其学习机制。
This paper reviews the effects of social learning on foraging behavior in herbivorous birds and mammals and the underlying mechanisms.
非人灵长类动物觅食行为生态学的研究对动物保护、人工驯养和繁殖具有重要意义。
The research of foraging behavior ecology has a great significance in animal protection and artificial breeding.
它们通常很难觅食，所以一些动物会在冬天来临前收集额外的食物并储藏起来，例如老鼠。
It is often hard for them to find food, so some animals such as mice collect extra food before winter and hide it.
为生存而进行的斗争不是发生在战斗中，而是在争夺有限的觅食区和占用没有肉食动物的区域的竞争中。
The struggle for existence occurs not in fights, but in the competition for limited feeding areas and for the occupancy of areas free from meat-eating animals.
许多动物在野外觅食时被杀死。
这意味着它们不需要像大多数动物那样，把大部分清醒的时间都花在觅食上。
This would mean that they wouldn't have to spend most of their waking time searching for food, as most animals do.
事实上北极熊是凶猛的野生动物，在无冰的夏季，北极熊会因难以觅食而变得饥不择食。
The truth was that polar bears are ferocious wild animals and can become desperate for food in the ice-free summer months.
许多动物通过向它们经验更丰富的同伴学习而获得诸如捕猎、觅食或躲避天敌的一些技能。
Lots of animals learn from their more experienced peers to gain skills such as hunting, foraging or evading predators.
这样的研究还指出，人们的行踪通常是不经意的，这于在觅食的动物中表现出来的“随机行走”类似。
Studies such as this suggested that humans wander in an apparently random fashion, similar to a so-called "Levy flight" pattern displayed by many foraging animals.
当人们提到动物时，会长着小母牛眼的毛皮生物不小心将叶子从树上扯下来，或是地面上的昆虫正在觅食。
When most people think about animals, they imagine furry little cow-eyed creatures innocently plucking leaves from trees or bugs from the ground for nourishment.
多巴胺是一种奖励诱导的自适分子，让动物在感觉饥饿前觅食。
Dopamine is an adaptive reward-inducing molecule that makes animals want to look for food before they're hungry.
觅食的时候，动物们必须持续地判断哪棵树上的果实最丰硕，哪朵花里的蜜汁最充盈。
Animals on the prowl for sustenance must constantly decide which tree has the most fruit, or which patch of flowers will contain the most nectar.
很多动物每天面临觅食、繁殖、社交等相关的抉择。
For many animals, each day consists of numerous decisions that pertain to eating, reproducing and socializing.
设想一只动物，它必须去觅食，但同时也不得不保护自己免受掠食者的攻击。
Think about an animal. It has to get food, but at the same time it has to protect itself from predators.
如果你关注那些森林松鼠，或者慷慨地提供给它们你的花园让他们觅食，你就能确切地知道这种动物一直以什么为食。
If you stick with forest squirrels or those that have been subsisting on your garden largesse, you know exactly what that beastie has been snacking on.
在某些情况下，我们会幻想自己的先人又复活了。 “一个动物到它最喜欢觅食地点，看到有个食肉动物一在那里的迹象，但不是食肉动物本身，可能是上次（下次）在那里站岗。
The animal that goes to a favorite food-foraging location and sees signs that a predator was there - but not the predator itself - may be on guard the next time.
科学杂志上的报道上称，埋葬地点显示阿拉斯加的古代居民除了觅食大型哺乳动物，也吃鸟类，鱼类和小型哺乳动物。
The burial site shows ancient residents of Alaska foraged for fish, birds and small mammals - as well as large game, reported the journal Science.
这种机制可能是为了确保饥饿的哺乳动物不要在该去觅食的时候沉沉睡去。
This mechanism probably evolved to make sure starving mammals don\\\\\\\'t go to sleep when they should be foraging for food.
行为生态学家，威尔艾仑对35种猫科动物的皮毛图案进行了研究，并详细记录的它们的生活习性，捕猎方式以及觅食的时间。
Will Allen, a behavioral ecologist, studied the coat patterns of 35 wild cat species and compiled details of their habitats, hunting styles and when they went on the prowl.
这种原始的哺乳动物生活在澳大利亚东部，在水中觅食，窝建造在河溪的岸上。
The primitive mammal lives in burrows in Eastern Australia dug along the banks of streams and rivers that it relies on for food.
这种假象的争斗方式，同类相食的发现以及他们巨大的体型均表明：霸王龙是独行食肉动物，从不集体觅食。
This suspected fighting behavior, the cannibalism finding and the massive size of these dinosaurs all indicate T. rex was a solitary predator that did not hunt in packs.
事实上，尽管大部分猫科动物都怕水，但所有种类的老虎都有在水中觅食或玩水的能力。
In fact, although Big Cats generally do not like water, tigers of all types have been spotted taking to the water to hunt and even to bathe for pleasure.
许多野生动物在夜间觅食。
其他的动物，比如活跃的松鼠，开始为难于觅食的寒冷的日子储存食物。
Other animals, such as the frisky squirrels, begin to store up food for icy days when it will be hard to find.
从前丛林里住着一只狮子。天天这只狮子要小动物们为他寻觅食品。
Once there lived a lion in the forest. Every day the lion asked small animals to look for food for him.
从前丛林里住着一只狮子。天天这只狮子要小动物们为他寻觅食品。
Once there lived a lion in the forest. Every day the lion asked small animals to look for food for him.
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