Found in nearly all habitats, except xeric regions of the Mojave and Colorado deserts that do not support mule deer populations. Most abundant in riparian areas, and brushy stages of most habitats.
Numbers appear to be increasing.
Also eat rabbits and hares, rodents, porcupines, skunks, coyotes, and, occasionally, domestic stock. Usually stalk prey on ground, often locating by scent. Kill larger prey by stalking within a few meters, and then leaping onto it and biting at base of skull. Caves and other natural cavities, and thickets in brush and timber provide cover. Seasonal movements within a fixed range commonly are in response to prey movements.