动物会哭泣的说法没有科学依据。

The notion that animals can weep has no scientific basis.

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科学家正试图把已灭绝动物的特征与现存类似动物相比较。

Scientists are attempting to compare features of extinct animals with living analogues.

《牛津词典》

考虑到他们对待家畜的方式，科学家们认为公众在动物福利方面特别言行不一致。

The scientists saw the public as being particularly two-faced about animal welfare in view of the way domestic animals are treated.

《柯林斯英汉双解大词典》

The language of Aristotelian political science is the language of man the political animal.

亚里士多德式政治科学的语言,是人类的语言，政治动物的语言。

耶鲁公开课 - 政治哲学导论课程节选

Opponents of animal testing are quick to point out that it's not a humane way to learn scientific facts.

动物实验的反对者很快就指出，利用这种方法得到科学事实是不人道的。

需要动物实验吗？ - SpeakingMax英语口语达人

So, this all seems a very technical phenomena related to animals and the like but it's easy to see how it generalizes and how it extends.

经典条件作用似乎是关于动物的,科学现象,但其实典条件作用发生,及其相关概念都简单易懂。

耶鲁公开课 - 心理学导论课程节选