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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庞若鸣在七个月前的离职，虽然不至于让苹果的技术大厦倾塌，但确实在一定程度上干扰了其自主研发的节奏。