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：tutorial资讯

12:52, 3 марта 2026Мир

Фото: George Christophorou / XinHua / Global Look Press

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abs_directory = os.path.abspath(directory)，详情可参考体育直播