One cougar was observed training her month-old offspring to kill grasshoppers. Females use rock crevices, brush piles or other make-shift shelter only for birthing and rearing kittens. They move the kittens to new dens frequently. Cougars don't roar like lions for the same reason your tabby doesn't. Both lack the proper resonating chamber in their throats.
Cougars do purr and yowl.
They also caterwaul when mating. Each coupling, however, lasts less than a minute. Researchers say the intensive mating is required to stimulate ovulation in the female. From a dead start, they can reach speeds of 40 miles an hour in less than 50 feet. That's one way you can tell you're not trailing a wolf, dog, coyote or fox.