The mountain lion (or cougar) is found only in the western hemisphere. In the Americas its range runs from the Straits of Magellan to the Canadian Yukon. It is found throughout Arizona except for the extremely arid southwest region and the areas where there is dense urban development.
USFWS photo by Larry Moats
Since these big cats are top level predators, they do not normally exist in heavy concentrations. One single animal will have a large territory enforced by boundary marking for mutual avoidance and survival. Except at breeding time and when raising young, mountain lions are solitary animals. The young, which may be born at any time of year, remain with their mother 15 to 22 months and then leave to seek out their own territories. The almost two-year period of training by their mother is necessary if the kittens are to have the necessary skills to stalk and kill their prey without being fatally injured themselves.
Though they are rarely seen by humans, adult mountain lions can be expected to dwell anywhere that there are deer, their principal prey animal. These proficient hunters need to kill a deer-sized animal, weighing from 125 to 200 pounds, once every week or two. The lion will cover with leaves or debris whatever is left of the prey after the first feeding. A deer will generally be consumed in two nights. When not hunting these big cats live in mountain dens similar to the one shown below.
Mountain Lion den (looking out from inside)
If you encounter a mountain lion
If you are attacked by a mountain lion
To avoid a potential attack by a mountain lion: