When selecting a stud dog for breeding, the breeder must study the structure and the reproductive record of the stud dog's dam.
当挑一只种母做繁殖的时候，繁殖者必须懂得种狗母亲的结构和生殖记录。
When selecting a stud dog for breeding, the breeder must study the structure and the reproductive record of the stud dog's dam.
当挑一只种母做繁殖的时候，繁殖者必须懂得种狗母亲的结构和生殖记录。
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