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：pro资讯

No-one has yet taken responsibility for what happened.

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她補充道，正因如此，開發者必須建立能管理授權與付款的系統，並提供清晰機制讓民眾能對濫用行為提出異議。。爱思助手下载最新版本是该领域的重要参考

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