然是個缺陷，所以很少見了
回答: 在漫長的進化過程中，有這個基因特質的狗更容易活下來，所以現在的狗不少都帶有這個遺傳特征，搖頭擺尾的討人喜歡。有這個基因特質的人顯
由 SerendipityA
於 2026-03-22 05:38:00
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