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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.
。快连下载安装是该领域的重要参考
But of course, hard coding a size guess is a bit rigid.
“中国一強”「レアアース」 日本の戦略に密着取材