Nature Season 23, Episode 5

Silent Roar: Searching for the Snow Leopard · PBS · Sunday, January 16

Most big cats do their best to remain hidden from human eyes, but none are quite as adept at this as the snow leopard. These cats lead largely solitary lives, populating the Himalayas at altitudes that offer only about half the oxygen to which humans are accustomed. So when wildlife filmmakers Hugh Miles and Mitchell Kelly set out to film this animal they knew they were in for a challenge.