A rare footage of a snow leopard, calling out to mark his territory in the wild and alert the females in the area, is fascinating many on the Internet. The video was filmed through remote field cameras in the Karakoram Mountains in northern Pakistan and released by the White Lion Foundation that stated that capturing snow leopards vocalising in the wild is unusual. The big cats are one of the most endangered species in the world with only about 4000 to 7500 remaining in the wild.