kills from November to April in Alberta showed that ungulates accounted for greater than 99% of the cougar diet. Learned, individual prey recognition was observed, as some cougars rarely killed bighorn sheep, while others relied heavily on the species.

In the Central and South American cougar range area, the ratio of deer in the diet declines. Small to mid-sized mammals, including large rodents such as the capybara, are preferred. Ungulates accounted for only 35% of prey