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.

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It said the commander of the Cuban boat was injured in the firefight that ensued.

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2月26日，长春高新方面对每经记者表示，这个项目还处于早期阶段，目前没有能对外交流的信息。（21世纪经济报道、财联社、红星资本局、每日经济新闻）

“十五五”期间

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