After pupping, the bitch gets in heat again in six months, but not
before. Some bitches carry their young for the fifth part of the
year or for seventy-two days; and their pups are blind for fourteen
days. Other bitches carry their young for a quarter of a year or for
three whole months; and the whelps of these are blind for seventeen
days. The bitch appears go in heat for the same length of time.
Menstruation continues for seven days, and a swelling of the genital
organ occurs simultaneously; it is not during this period that the
bitch is disposed to submit to the dog, but in the seven days that
follow. The bitch as a rule goes in heat for fourteen days, but
occasionally for sixteen. The birth-discharge occurs simultaneously
with the delivery of the whelps, and the substance of it is thick
and mucous. (The falling-off in bulk on the part of the mother is
not so great as might have been inferred from the size of her
frame.) The bitch is usually supplied with milk five days before
parturition; some seven days previously, some four; and the milk is
serviceable immediately after birth. The Laconian bitch is supplied
with milk thirty days after lining.
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