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：dl资讯

至少，這項判決削弱了特朗普逼迫其他國家對美國讓步的籌碼，也讓他「無敵」的形象蒙上陰影。

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