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.
· 胡波 · 来源:tutorial资讯
Play video, "張又俠被查:中國解放軍領導層七剩二 學者稱或影響對台計劃", 節目全長 2,48