The Sariska Tiger Reserve is situated in the Alwar district in the state of Rajasthan and is one of the important national parks in Rajasthan. It was the hunting grounds of the State of Alwar. The sanctuary was declared as a Wildlife Reserve in 1955 and was brought under the Project Tiger scheme in 1978. The most attractive feature of the Sariska Tiger Reserve is its population of Royal Bengal Tigers. It is home to a large number of wild animals including Rhesus monkeys, Hanuman langurs, hares, wild boars, chousingha or the four horned antelope, chinkara, nilgai, sambhar, golden jackals, striped hyenas, caracal, jungle cats and leopards. The park is spread over 866 square kilometers. The Sariska Tiger Sanctuary is also the first ever Tiger Reserve in the country where tiger relocation and rehabilitation has been carried out successfully.