这个好理解，以前没有家猪，狗，猫这类人类的pet，后来慢慢驯服培养出来的，现在在基因里了

来源: FEVRE 于 2023-11-16 06:52:05 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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