This drift has been studied extensively in many animals and in biological activities ranging from the hatching of fruit fly eggs to wheel running by squirrels.

在许多动物中，以及在诸如果蝇卵的孵化乃至松鼠跑动的转轮这样的生物活动中，这种变化趋势一直受到广泛的研究。

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Red coloration is associated with aggression in many animals.

对很多动物来说，红色象征着进攻。

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Yet superstitious behavior can be recognized in many animals, not just humans.

但是迷信行为不仅在人类社会可见，动物也有。

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They have made over twenty movies and written many books and articles about the behavior of animals in the wild.

VOA: special.2011.03.23

Warming temperatures are also threatening the many kinds of plants and animals that live in this mountain ecosystem.

VOA: special.2009.04.22

Many of the animals die when people harvesting other kinds of fish pull in sharks by accident.

VOA: special.2009.06.16

The job gives them a chance to interact with their favorite creatures, and in many cases, cure animals of disease.

FORBES: The Most Underrated Jobs 2012

In the past year, scientists have discovered that a new kind of gene --one Lander and his colleagues would not have recognized--is present in the genomes of many animals.

FORBES: Magazine Article

After the introduction of the Dangerous Wild Animals Act in 1976, many private collectors are thought to have turned their animals loose.

BBC: Isle of the tiger