Baby cougars are often called cubs, and they are sometimes referred to as kittens. They remain with their mother for the first two years of life. It's during this two-year period that cubs learn to hunt and survive on their own.
Once cougars have reached 2 years of age, they leave the protection of their mother, and become reliant on their own abilities for survival. By the age of 2 or 3, female cougars are able to reproduce. This early birthing ability is essential to survival and propagation, as cougars typically only live to 10 years old in the wild.