If this "social norm" or "community benefit" source was true, why wouldn't it hold true for other animal groups?

如果这个社会规范和造福社会的来源是真实的，那么为什么对其它动物群体而言是不真实的呢？

youdao

There is just something a bit too lemming-like about that course of action and I've always taken pride in being true to who I am even if that means I must break with the norm.

这简直是太像那些为了行动而动的旅鼠了，而我，则一向是以自己的真实而骄傲的，哪怕有时这意味着我要打破某些规矩。

youdao

It might be true that those cases do happen, but I really think they are not the norm.

虽然有这种案例，但我并不认为这是一种普遍情况。

需要动物实验吗？ - SpeakingMax英语口语达人

True, this isn't always the norm for dealing with today's ills, but why add to the problems of an already overburdened world?

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It is still the norm for gays and lesbians to lead double lives, revealing their true feelings only to their closest friends.

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