What about the lower animals?

低等动物怎么办呢？

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The ability to talk distinguishes human beings from lower animals.

语言能力把人和其他低等动物区别开来了。

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If this is the true standpoint, the lower animals appear to enjoy a happier destiny than man.

如果这是正确的立场，低等动物似乎享有比人类更幸福的命运。

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VandeBerg says he and his colleagues go out of their way to use lower forms of animals before experimenting on chimpanzees.

VOA: standard.2010.02.16

We differ from lower animals and our brains, which are much more capable of storing and processing information, but we're living in a time of revolution when machines are challenging or competing with our brains.

我们不同于其他低等动物，我们的大脑更能够存储和处理信息，不过身处改革年代,机器开始挑战甚至是,和我们的大脑开始竞争。

耶鲁公开课 - 金融市场课程节选

If it's possible, use animals that don't feel pain, or use lower forms of life.

如果可以的话，请使用那些感觉不到疼痛的动物，或者用低级生物。

需要动物实验吗？ - SpeakingMax英语口语达人

Although extremely rare in vertebrates, parthenogenesis (out of the Greek for "virgin birth") occurs in a number of lower animals.

BBC: NEWS | Science/Nature | Captive shark had 'virgin birth'

The Taxpayer's Alliance, which lobbies for lower taxes, has said animals should be rescued by animal charities.

BBC: Devon and Somerset fire crews to train in animal rescue

When gray wolves were listed under the Endangered Species Act in 1974, Minnesota hosted one of the only remaining populations of the animals in the lower 48 states.

CNN: Minnesota wolves considered for delisting