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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Salesforce CEO 反驳「软件末日」:都不是第一次这样讲了

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Фото: Maksim Konstantinov / Globallookpress.com,推荐阅读体育直播获取更多信息

俄罗斯外长担忧美以空

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