This documentary follows cat species from around the world, from the lions of Tanzania-the only cat species to live in groups - to the tiny rusty spotted cat of Sri Lanka, 200 times smaller than a lion but just as curious. The film also peeks into the secret lives of the Canada lynx, which lives further north than any cat, and follows an African leopard mother, which for a decade has worn a radio collar allowing scientists to follow every twist and turn of her existence.

Originally released by BBC, 2018. Streaming video file encoded with permission for digital streaming by Infobase on May 22, 2019.

Introduction: Big Cats: Episode One (2:08); --Panthera Leo (7:24); -- Miniature Predator (4:40); -- South American Species (2:03); -- Panthera Uncia (6:41); -- Panthera Pardus and Kittens (7:51); -- Puma Concotor (5:21); -- Lynx Canadensis (5:27); -- Acinonyx Jubatus (6:28); -- Credits: Big Cats: Episode One (0:33); .