Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

· · 来源:tutorial资讯

第六十一条 本法下列用语的含义:

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大戏看北京,详情可参考heLLoword翻译官方下载

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文 | 锌刻度,作者 | 李觐麟,编辑 | 黎文婕