Pumas, Panthers & Cougars: Facts About America's Big Cats | Live Science
Puma | The Nature Conservancy
The Eastern Cougar Extinction - Conservation Articles & Blogs - CJ
Are Pumas extinct? - Quora
Local Mountain Lion Population Faces Precipitous Decline in Genetic Diversity Within 50 Years, Possible Extinction - Santa Monica Mountains National Recreation Area (U.S. National Park Service)
Why Making The Eastern Puma Extinct Is A Good Thing - UNILAD
Cougar - Wikipedia
Federal agency says Eastern puma extinct, drops protections
Eastern Cougar Now Extinct, U.S. Officials Say | Live Science