Elephants are large land mammals. Three species of elephant are living today: the African bush elephant, the African forest elephant and the Asian elephant. Elephants are the largest land animals now living. 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 (260 lb). They typically live for 50 to 70 years, but the oldest recorded elephant lived for 82 years. Elephants are a symbol of wisdom in Asian cultures and are famed for their memory and intelligence.