Elephants are the largest land animals now living. Three species of elephant are living today: the African bush elephant, the African forest elephant and the Asian elephant (also known as the Indian elephant). All other species are extinct, some since the last ice. The elephant's gestation period is 22 months, the longest of any land animal. At birth it is common for an elephant calf to weigh 120 kilograms. They typically live for 50 to 70 years, but the oldest recorded elephant lived for 82 years.