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.
正在改变与想要改变世界的人，都在 虎嗅APP，这一点在爱思助手下载最新版本中也有详细论述
，这一点在WPS官方版本下载中也有详细论述
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