Giraffes are the tallest of all animals, reaching as much as 18 feet in height, with a shoulder height of up to 12 ft. Both male and female giraffes have horns. Giraffe don't migrate during the dry season but get their food and most of their moisture from leaves. Giraffes can go for over a month without drinking and do so often, perhaps because of the vulnerable position they must assume in order to drink. Reproduction Giraffes reach sexual maturity at 3 to 4 years.
Males fight for females during mating season by butting heads.
The gestation period for giraffes is about 15 months. A single calf is born, rarely twins. Calves are usually 6 ft. tall and can stand up 20 mins. after birth. Behavior Females stay in their mothers' territories, males leave in all-male groups to search for females in heat. Males are distinguishable at a distance from females because of their different grazing habits.