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：m资讯

她在入园前，已经可以自己穿脱衣服、鞋子、手套、帽子这些事情了。

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Nature, Published online: 27 February 2026; doi:10.1038/d41586-026-00441-y。业内人士推荐91视频作为进阶阅读

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We waited extra long this year for the annual Samsung Unpacked event. Like always, we have fresh new Samsung Galaxy phones to drool over, or simply consider if your current Android phone is in need of an upgrade.