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.

2026年2月23日 · 黄磊 · 来源：dev资讯

"transaction" terminal that we would now recognize as a credit card reader. It

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A common mechanism of inhibition of the essential lipid II flippase MurJ by three distinct phage-encoded single-gene lysis proteins provides insights into potential new targets for antimicrobial development.

Фото: Владимир Астапкович / РИА Новости

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