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：cdn资讯

Adam EleyBBC News

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Гангстер одним ударом расправился с туристом в Таиланде и попал на видео18:08，更多细节参见同城约会

Израиль нанес удар по Ирану09:28

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A handful of companies monopolise the web, with unprecedented access to our data. But there are many more ethical – and often distinctively European – alternatives