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.

2026年1月27日 · 王芳 · 来源：haikou资讯

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The Mornin

河北正定县，滹沱河艺术生态岛环境宜人，吸引市民健身。