* Deer: The most common prey for mountain lions. They prefer mule deer and white-tailed deer.
* Elk: Another significant prey species, especially in areas where elk are abundant.
* Pronghorn: A fast-running antelope, particularly important in the Great Plains.
* Bighorn sheep: A challenging prey for mountain lions, but they are able to hunt them, especially lambs.
* Other smaller mammals: Mountain lions also prey on rabbits, hares, squirrels, raccoons, and even porcupines.
* Domestic livestock: Occasionally, mountain lions may prey on livestock like cattle, sheep, and goats, which can lead to conflicts with humans.
Mountain lions are opportunistic hunters and their diet can vary depending on availability and location. While they prefer larger ungulates, they will take advantage of other opportunities when necessary.