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.

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第一百三十二条 公安机关及其人民警察办理治安案件,禁止对违反治安管理行为人打骂、虐待或者侮辱。

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“用发展的办法消除贫困根源”“一把钥匙开一把锁”

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newscientist.com