Cougar – International Society for Endangered Cats (ISEC) Canada
Extinct puma, cougar may never have existed in South Carolina
Book of the Week: The Extinction of the Eastern Cougar – Biodiversity Heritage Library
The Eastern Cougar Is Officially Extinct - Atlas Obscura
Puma That Vanished from U.S. East Coast 80 Years Ago Sadly Declared Extinct
How We're Helping Protect Endangered Florida Panthers
Eastern Puma declared officially extinct
Eastern cougar declared extinct, but whether it ever existed is a question | CBC News
Eastern cougar - Wikipedia
This Isn't the End of the Eastern Cougar
Eastern American cougar declared extinct
Extinct puma, cougar may never have existed in South Carolina
Eastern Cougars Declared Extinct—But That Might Not be Bad
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)