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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ВСУ запустили «Фламинго» вглубь России. В Москве заявили, что это британские ракеты с украинскими шильдиками16:45

// 创建临时数组存储左子数组（右子数组可直接用原数组）

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内存成本暴涨 300%，中国手机市场进入「大涨价元年」，千元机加速消失

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