India has 12 Biosphere Reserves, 32 Elephant Reserves, 53 Tiger Reserves, 107 National Parks and 566 Sanctuaries. With 2.4% of the world's area, India has 8.1% of the world's total biodiversity. The BIG SIX of Indian parks are - Asian Elephant, Indian Rhinoceros, Royal Bengal Tiger, The Asiatic Lion, Indian Leopard and the mighty Gaur.  Plenty of choice but in a country of a billion, book early.