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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14:39, 27 февраля 2026Путешествия

（本报记者赵成、吴丹、朱隽、王昊男、侯琳良、杨文明、王云娜、刘军国、李心萍、寇江泽、李林蔚、常钦、刘新吾、郑洋洋、李俊杰），详情可参考WPS下载最新地址

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对首都北京的规划工作，明确提醒“规划科学是最大的效益，规划失误是最大的浪费，规划折腾是最大的忌讳”；

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