eastern cougar References eastern cougar extinct mammal Ask Anything Homework Help Also known as: Puma concolor cougar Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: puma/ Population status and taxonomyA subspecies known as the eastern cougar (P. concolor cougar), which once inhabited the eastern United States and southern Ontario and was listed as endangered in 1973, was declared extinct in 2011. Read MoreA subspecies known as the eastern cougar (P. concolor cougar), which once inhabited the eastern United States and southern Ontario and was listed as endangered in 1973, was declared extinct in 2011. Read More