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：stat资讯

「他們首先想的的是，這些敘事是否真誠？是否能對他們的人生有所幫助？是否能讓他們在一個保守的異性戀社會中感覺好一點？」

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