Covering a vast area in the Terai of Uttar Pradesh, the Dudhwa National Park is situated on the Indo-Nepal border. It is one of the few areas that represents the highly diverse and productive Terai ecosystem that is home to an array of endangered species of tall wet grasses. Some of the trees here are more than 150 years old and stand tall at 21 meters, and the fauna found in the park is very similar to that of Kaziranga due to the tall wet grasslands. The park is home to a large number of mammal species including the exotic Indian rhinoceros and approx. 350 species of birds, both resident and migratory species. Much of the avian fauna is aquatic in nature and found around Dudhwa's lakes.