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：comic资讯

Мощный удар Израиля по Ирану попал на видео09:41

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A03要闻

（五）向场内投掷杂物，不听制止的；