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Gestation. Giraffes are pregnant for a period between 14 and 15 months, or 453 to 464 days, one of longest gestation periods in the animal kingdom. Giraffes usually give birth to one offspring at a time, although twins are born occasionally. Because the gestation period is so long, the giraffe won't give birth to another baby for 16 months or more.
Dog in Labor Sign & Stages. The fetuses must have a normal size in relationship with the pelvis and present a normal position; their legs must be in front of the head, which comes first. The duration of labor can be from 2 to 12 hours, but it can also last up to 36 hours in first timers. The dog is anxious, agitated, she digs and sometimes vomits. The interval between two births varies between 10 and 60 minutes. This corresponds to the phase of expulsion of the placenta, which is done after every birth.