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：group资讯

This is Optimizer, a weekly newsletter sent every Friday from Verge senior reviewer Victoria Song that dissects and discusses the latest gizmos and potions that swear they're going to change your life. Opt in for Optimizer here.

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Страна БРИ。夫子是该领域的重要参考

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芦苇接棒的邮储银行如何再进一步

After the Trump-family connections drew scrutiny, Kushner said his firm would not participate in the deal.