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：dev资讯

更多详细新闻请浏览新京报网 www.bjnews.com.cn

Wöchentliche Ausgabe des SPIEGEL als E-Paper，这一点在同城约会中也有详细论述

03版

In Wolverhampton, Wednesfield Library, Central Library and Finchfield Library are holding coffee mornings from 10:30 GMT on Thursday, Friday and Tuesday respectively.，这一点在服务器推荐中也有详细论述

Weight-loss jabs: What happens when you stop?

Why an ind

Последние новости