ScienceDaily (Nov. 30, 2010) — As predators, cougars tend to select prey animals that are weaker and easier to attack during certain seasons, according to results of a new study. The authors' study of cougar predation from 1998 to 2008 in west-central Alberta, Canada, aimed to answer four questions: •How many ungulates, or hooved animals, do cougars kill? •How does season influence cougar predation? •What effect does cougar population structure have on predation rates? •Do cougars target vulnerable prey?
http://www.sciencedaily.com/releases/2010/11/101119200728.htm