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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圖像來源,China News Service/VCG via Getty Images。safew官方下载对此有专业解读

曾宣誓效忠“伊斯兰国”

Последние новости。业内人士推荐WPS下载最新地址作为进阶阅读

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20元买来的阿爸

As bats lose their habitats, churches are becoming a refuge for the animals