While Team Avatar was staying in Ba Sing Se, Momo got out into the city one night, and a group of pygmy pumas attacked the winged lemur as he entered their area. However, before the pumas could catch him, they were captured and taken to a butchers. Momo helped them escape, subsequently befriending them, and they soon found themselves on a rooftop, enjoying the view of the city. One of the pumas stole a piece of Appa's fur that Momo had tied around his leg, and the trio took it to a footprint the flying bison left behind. Momo rested in it as the pumas watched on.
The pygmy puma is a smaller, sleeker version of a puma that is bred for compact city-living. A dark green or black short haired animal, it has sharp claws at the ends of its large, five fingered paws, though lacks the typical vestigial fifth finger that most felines possess. Its eyes are green.
This carnivorous cat seems to be a social animal that lives in the Earth Kingdom in clowders. These medium-sized, muscular felines can be found in the Lower Ring of Ba Sing Se, where the poverty of the district has allowed them to remain unregulated and has helped them adapt to the urban environment. This habitat has molded their skills as hunters to adapt to the city; they are able to scale walls, fences, and other structures as well as leap from building to building with apparent ease. Though they possess a ferocious side with sharp fangs and claws, pygmy pumas seem to be quite affectionate.
Although much smaller, this cat resembles the melanistic variation of a puma. They are found mostly in Canada, where they are protected from hunting, western North America and western and southern South America. Though they mostly resemble pumas, these felines act more similarly to a domesticated house cat in their affectionate state.