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：open资讯

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What is today’s Moon phase?As of Saturday, Feb. 28, the Moon phase is Waxing Gibbous. According to NASA's Daily Moon Guide, 88% of the Moon will be lit up tonight.，这一点在heLLoword翻译官方下载中也有详细论述

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// Each one triggers promise machinery internally