The cougar is the largest of the small cats in America, males reaching over 2m long. They patrol large territories, moving during both day and night and taking shelter in caves and thickets. A cougar's preferred food is large deer, such as mule deer or elk. They stalk their prey before bringing it down with a single bite to the throat, or ambush it from a high vantage point. Cougars live alone, and mark their territories with their scent and by scraping visual signs in the soil and on trees.