不就是人类为了交配，荷尔蒙分泌造成的么。猪牛马有没有爱情，人家为了交配也决斗呢

来源: deardeermac 于 2021-08-30 12:59:06 [旧帖] [给我悄悄话] 本文已被阅读：次

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