Eastern cougar declared officially extinct - CBS News
The Eastern Cougar Extinction - Conservation Articles & Blogs - CJ
Eastern Puma Is Extinct But There Is A Silver Lining
Eastern Cougar Declared Extinct | Audubon
Eastern Puma declared officially extinct
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)