The Desert National Park is an excellent example of the eco-system of the Thar Desert and its rich fauna. The Sudashri forest post is the most ideal place for observing wildlife in the Desert National Park. Sand dunes form less than 20 per cent of the park, which consists of craggy rocks, pavements and compact salt lake bottoms, inter-medial areas and fixed dunes.

Its inhabitants include the blackbuck, chinkara, wolf, Indian fox, desert fox, hare and desert cat. Flights of sand-grouse start coming to waterholes from sunrise onwards. One can also hear the morning call of the grey partridge. Blue tailed and green bee-eaters, common and bush quail and Indian rollers are birds, which are commonly found around waterholes. The park is also home to the great Indian bustard - the state bird of Rajasthan.