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Giraffe gestation lasts between 14 and 15 months, after which a single calf is born. The mother gives birth standing up and the embryonic sack actually bursts when the baby falls to the ground. Newborn giraffes are about 1.8 meters tall.
Offspring. As in cattle, female giraffes are called cows, while the males are called bulls. After mating, the cow will have a gestation period of around 14 months. During birth, the calf will drop to the ground, since mother giraffes give birth standing up. The fall can be as far as 5 feet (1.5 m), according to National Geographic. New calves are quite large, at 6 feet tall (1.8 m), 100 to 150 lbs.