Eastern puma declared extinct, 80 years after last confirmed sighting - The Wildlife Society
Feds Prepare to Declare Eastern Cougar Extinct
Puma That Vanished from U.S. East Coast 80 Years Ago Sadly Declared 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)
Eastern puma declared extinct––but did it ever really exist? - Animals 24-7
What's the Difference Between Cougar, Puma & Mountain Lion
Extinct puma, cougar may never have existed in South Carolina
The Eastern Cougar Is Officially Extinct - Atlas Obscura
The Eastern Cougar Extinction - Conservation Articles & Blogs - CJ