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.

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Мощный удар Израиля по Ирану попал на видео09:41

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抓落实，是衡量领导干部党性和政绩观的重要标志。

For people who feel squeamish about the process, she said it was important to know the facts around donation, adding it often helped the grieving process for families.

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"We have an expected behaviour pattern [for protests]," one police officer has told the BBC anonymously. "But with this new generation, we do not understand their social media or how they mobilise on the ground."