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：dev资讯

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Webb captured the object in infrared — light wavelengths that are invisible to human eyes but can pierce through thick dust. The new views, in both near and mid-infrared, sharpen details from the photos taken by NASA's Spitzer Space Telescope more than a decade ago.

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她和豆包的交流也不止是这个春节。每天外婆都会和豆包闲聊几句，给豆包打语音，打视频。

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