Читать книгу The Natural History of Pliny (Vol. 1-6) - Pliny the Elder - Страница 437

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This animal brings forth twice in the year; it is capable of bearing young when a year old, and gestation continues for sixty days. The young ones are born blind, and the greater the supply of nourishment from the mother’s milk, the more slowly do they acquire their sight; still, however, this never takes place later than the twentieth day, or earlier than the seventh. It is said by some writers, that if only one is born, it is able to see on the ninth day; and that if there are two, they begin to see on the tenth, every additional one causing the power of seeing to come a day later. It is said, too, that the females which are produced by the mother in her first litter, are subject to the night-mare.1889 The best dog of the litter is the one which is last in obtaining its sight, or else the one which the mother carries first into her bed.