About 2,000 greater one-horned Asian rhinoceroses survive today and, like most large animals, the species is threatened with extinction as its habitat is reduced by the activities of people. The National Zoo participates in the American Zoo and Aquarium Association's greater one-horned Asian rhinoceros Species Survival Plan. Institutions that take part in this program carefully plan the breeding and management of the species in a cooperative effort to insure its survival. It's a good indication that zoo conservation programs are succeeding. Internet visitors may click on the Kali link on the homepage to find the pictures.
Asian rhinos are large with thick, armor-like skin.
They have one horn, three toes per foot, excellent hearing and smell, but poor eyesight. Females reach sexual maturity between 6 to 9 years of age, and cycle every 45 days until conception. Gestation is about 16 months, and calves are weaned between one and two years of age. Females calve every 3 to 4 years.