DIESTRUS in the unspayed female dog. The period of sexual inactivity after the female is receptive.
未绝育雌狗的间情期.雌狗易受精后的跃期.
DIESTRUS in the unspayed female dog. The period of sexual inactivity after the female is receptive.
未绝育雌狗的间情期.雌狗易受精后的跃期.
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