IntroductionThe snow leopard is categorized as endangered in the 2009 IUCN Red List (IUCN, 2009). In Chitral Gol National Park, the status of snow leopard had changed from Tenuous Security to Seriously Threatened by 1974 as a result of hunting (Schaller, 1976). According to Ahmed (1994), the snow leopard faces problems of survival caused by the fur trade, conflicts with grazer communities, and the reduction of natural prey.Snow leopard inhabits high mountainous regions of Central and South Asia. Generally, it is found at altitudes ranging from 3000 m to 4000 m. However, it may descend to as low as 1500 m during winter (Schaller, 1977).In Pakistan, the snow leopard has a wide distribution in the northern mountainous region. It occurs sparsely in the northern Chitral, Dir, Swat, and Kohistan districts of Khyber-Pakhtunkhwa; the Gilgit-Baltistan districts of the Northern Areas (NA); and the Muzaffarabad district in Azad Jammu and Kashmir (Ahmad, 1994).The total estimated wild population of the snow leopard is between 4500 and 7500 individuals in the world (Jackson et al., 2010). The number of snow leopards in Pakistan has been estimated to be 200-300 (Snow Leopard Network, 2014), while the total estimated population of snow leopard in Chitral was reported by Schellar (1977) as fewer than 250 individuals.Snow leopard has a critical role in the ecosystem and serves as an indicator species for Asia's high mountain ecosystems, as it resides at the top of the food chain, requires large home ranges, moves over vast areas, and flourishes under pristine conditions. It is also a flagship species around which people rally in support of farreaching conservation initiatives. By protecting snow leopards, one also protects the habitat for a host of other plant and animal species. Where the snow leopard occurs in good numbers, the environment is considered to be more productive and healthy. Snow leopards keep other species' numbers down and also improve their own genes with survival adaptations (Jackson and Hunter, 1996).An adult snow leopard requires approximately 3000-4000 kcal per kilgram of its body weight per day as determined by the mass-energy equation developed by Kleiber (1975). In a similar study, Emmons (1987) reported this requirement to be 40-45 g of food per Abstract: Snow leopard (Panthera uncia) is an elusive endangered carnivore found in remote mountain regions of Central Asia, with sparse distribution in northern Pakistan, including Chitral and Baltistan. The present study determined the food habits of snow leopard, including preferred prey species and seasonal variation in diet. Fifty-six scat samples were collected and analyzed to determine the diet composition in two different seasons, i.e. summer and winter. Hair characteristics such as cuticular scale patterns and medullary structure were used to identify the prey. This evidence was further substantiated from the remains of bones, claws, feathers, and other undigested remains found in the scats. A total of 17 prey species were identified; 5 of them were l...