Cougars have 30 teeth. The canines are large and used for delivering a lethal bite. They stay low to the ground and use available cover. Then when they get close enough, they explode with a powerful burst of speed and over take their quarry. Deer are their main diet, but they will also accept smaller animals and birds.
Cougars are territorial and maintain their own home ranges.
Sizes of these home ranges vary depending on the available prey and type of habitat. Cougars breed at about 2 years of age, with a gestation period of 3 months. The female raises the litter on her own, and teach them how to hunt and survive. The young stay with their mother until they are 17 to 23 months old, at which time they disperse and find their own territory. Here is a range map of the different sub-species of cougar.