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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(By the way, the estimated profit margins for commercial scientific publishers are around 40%, which is higher than Microsoft.)

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Spectacula

當雨果出生時，貝爾說：「這簡直是一個奇蹟。」，推荐阅读谷歌浏览器【最新下载地址】获取更多信息

Article InformationAuthor, 馬特‧墨菲（Matt Murphy）,