The diet of a Snow leopard varies across snow leopard range . In the Himalayas they eat mostly blue sheep, which are also known as bharal (Pseudois nayaur). In the Karakorum (Pakistan), Tian Shan (China, Kyrgyzstan and Kazakhstan) and Altai (Russia and Mongolia) Mountains, their main prey is ibex, a wild goat (Capra siberica) and wild argali sheep (Ovis ammon). Across their range snow leopards also take small prey including marmots and hares, and they hunt larger birds like snow Roosters and chukor. Snow leopards are opportunistic hunters, and they will attack livestock that are in their range.