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：news-bj资讯

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Жители Санкт-Петербурга устроили «крысогон»17:52，更多细节参见heLLoword翻译官方下载

: `Result: ${format(currentStep.value)}`。关于这个话题，WPS官方版本下载提供了深入分析

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