American Cougar tells a unique story of a community of cougars whose skills are illustrated and tested as they struggle to survive in the severe landscape of the Northern Rocky Mountains. 它体重45公斤，肌肉发达，筋骨强健。美洲狮是北美洲体形最大的猫科动物，却也面临各种威胁。它们的幼崽离奇失踪。一个研究小组远赴美国怀俄明州，探索事情的真相。他们记录了前所未有的野外画面与声音，并成功走进了世界上最神秘的食肉动物的世界。