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一直以来,我们都理所当然地认为是人类收养并驯化了犬类。现在,有科学家提出一种新理论,认为是狗主动接近人类的。那究竟是谁先迈出友谊的第一步呢?一起看看科学家的说法吧!
All along, we all take it for granted that humans adopt and domesticate dogs. Now, scientists have come up with a new theory that dogs are pro-human. So who is the first step towards friendship first? Look at the scientists say it!