White, Black, Indian, Javan, and Sumatran make up the five species of rhino in the world. White and black rhinoceros are native to Africa, while Indian, Javan and Sumatran can be found in India and Asia. Due to widespread poaching, all rhinos are under threat, but the black rhino, Javan rhino and Sumatran rhino are classified as critically endangered and could become extinct in as few as three generations.
The greater one-horned rhino (or “Indian rhino”) is the largest of the rhino species. Once widespread across the entire northern part of the Indian sub-continent, rhino populations plummeted as they were hunted for sport or killed as agricultural pests. This pushed the species very close to extinction and by the start of the 20th century, around 200 wild greater one-horned rhinos remained.