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：dev资讯

Фото: Iryna Rybakova / Press Service of the 93rd Kholodnyi Yar Separate Mechanized Brigade of the Ukrainian Armed Forces / Handout / Reuters

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女子は7年連続。im钱包官方下载对此有专业解读

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夯实中国式现代化的底座

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