U.S. authorities declare Eastern puma extinct, 80 years after last sighting - Portland Press Herald
Are Pumas extinct? - Quora
Eastern Cougar "Extinction" - Some Key Points - Dr. L. Mark Elbroch
The eastern puma is declared officially extinct | Daily Mail Online
Puma | The Nature Conservancy
Top cat: why the puma is a leading influencer in the animal kingdom | Americas | The Guardian
Puma | The Nature Conservancy
The Eastern Cougar Is Declared Extinct After Not Being Seen For 80 Years | IFLScience
Puma | mammal species | Britannica
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)
This Isn't the End of the Eastern Cougar - Outside Online
Is Extinction a Path Forward for the Eastern Cougar? | MeatEater Conservation
The "Extinction Prevention Act" Is Not Enough - Rewilding
Puma | The Nature Conservancy
Puma Profiles: P-5 (U.S. National Park Service)
Eastern puma declared extinct––but did it ever really exist? - Animals 24-7
Eastern Cougar Declared Extinct | Rocky Mountain Elk Foundation