Eastern Cougar "Extinction" - Some Key Points - Dr. L. Mark Elbroch
The Eastern Cougar Is Officially Extinct - Atlas Obscura
How We're Helping Protect Endangered Florida Panthers
Eastern cougar | extinct mammal | Britannica
Eastern puma declared extinct, 80 years after last confirmed sighting - The Wildlife Society
Federal agency says Eastern puma extinct, drops protections
The eastern puma is declared officially extinct | Daily Mail Online
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)
Eastern Puma declared officially extinct
U.S. authorities declare Eastern puma extinct, 80 years after last sighting
Eastern Cougars Removed from Endangered Species List - Mountain Lion Foundation