The Eastern Cougar Is Declared Extinct After Not Being Seen For 80 Years | IFLScience
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)
Puma Animal Facts | Felis concolor - AZ Animals
Florida Panther (Puma concolor coryi) | U.S. Fish & Wildlife Service
California's mountain lions face extinction – but farmers slam moves to protect the species | The Sun
Eastern cougar - Wikipedia
U.S. authorities declare Eastern puma extinct, 80 years after last sighting - Portland Press Herald