In the aftermath of a woman's apparent killing by a mountain lion on a trail in Northern Colorado on New Year's Day, several people who have had recent encounters with mountain lions in the area are sharing their stories. CPW has already euthanized at least two mountain lions in the area since the fatal attack, and was out in the area on Friday looking for a third cougar. Tests will be completed to see if one or any of the lions were involved in the fatal attack on the woman, as well as testing

Learn some little-known facts about mountain lions: | National Geographic TV