THe MNRF currently lists cougars as 'endangered' (see link below), last I paid attention to this some 20 yrs ago the animal was listed as 'extirpated' meaning there were too few numbers to count. It would seem the change from extirpated to endangered indicates a rise in the population.
Status
Endangered“Endangered” means the species lives in the wild in Ontario but is facing imminent extinction or extirpation.
Date added to the Species at Risk in Ontario ListThe Mountain lion (Cougar) was already assessed as endangered when the Endangered Species Act took effect in 2008.
http://www.ontario.ca/environment-an...in-lion-cougar