The southern plains are home to mongooses, small Indian civet, hares, the Asiatic jackal, the Indian pangolin, the jungle cat, and the desert cat. There are mugger crocodiles in the Indus, and wild boar, deer, porcupines, and small rodents in the surrounding areas. The sandy scrublands of central Pakistan are home to Asiatic jackals, striped hyenas, wildcats, and leopards. The lack of vegetative cover, the severe climate, and the impact of grazing on the deserts have left wild animals in a precarious position. The chinkara is the only animal that can still be found in significant numbers in Cholistan. A small number of nilgai are found along the Pakistan–India border and in some parts of Cholistan. A wide variety of animals live in the mountainous north, including the Marco Polo sheep, the urial (a subspecies of wild sheep), the markhor goat, the ibex goat, the Asian black bear, and the Himalayan brown bear. Among the rare animals found in the area are the snow leopard and the blind Indus river dolphin, of which there are believed to be about 1,100 remaining, protected at the Indus River Dolphin Reserve in Sindh. In total, 174 mammals, 177 reptiles, 22 amphibians, 198 freshwater fish species and 5,000 species of invertebrates (including insects) have been recorded in Pakistan.