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:tutorial资讯

Материалы по теме:

"consoleLog": consoleLog,

重磅官宣safew官方版本下载是该领域的重要参考

Блогершу Лерчек госпитализировали в онкореанимацию02:39

Go to worldnews

本版责编

I replaced my bedroom TV with a $180 Roku projector - and don't regret it