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：edu资讯

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The government said it had "taken action" to clean up rivers, lakes and seas. Southern Water has been approached for comment.

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第九十二条 公安机关办理治安案件，有权向有关单位和个人收集、调取证据。有关单位和个人应当如实提供证据。

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Мерц резко сменил риторику во время встречи в Китае09:25