The Yellowstone Predator is a four-letter term for the PUMA, also known as the Cougar or Mountain Lion. This large cat is native to the Americas and is the second-heaviest cat in the Western Hemisphere after the Jaguar. The PUMA is an apex predator and is found in many habitats, including the Yellowstone National Park. It is an important part of the ecosystem and helps to keep the balance of nature.