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：maker资讯

Мир Российская Премьер-лига|19-й тур

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Овечкин продлил безголевую серию в составе Вашингтона09:40

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Matt Wilson, countryside manager for the National Trust, said: "The new island, located just off the eastern shore of Northey will provide a refuge for birds above the highest tides and away from disturbance on shore, acting as a lifeline for birds that are running out of safe spaces to nest and rest.