Male cougars are simply called cougars or by any of the other nicknames the species has. Female cougars are sometimes referred to as she-cougars to differentiate them from the males.
Cougars are the largest of the small cat species and are notable for the large number of nicknames used to describe them. In addition to being called cougars, both males and females are called mountain lions, pumas, panthers, catamounts and mountain cats, along with regional variations on those terms, according to Defenders of Wildlife. Puma is the name usually used by wildlife biologists, but mountain lion is the most common name among the general population. Baby cougars are called cubs.