The Katara have features that are both humanoid and feline. Their legs are fairly cat like, but stable to stand on with more human like feat, and leathery pads on the bottom. Their torso is a bit more cylindrical than some humanoids, but is still has some shoulder and pectoral proportion to it. Their arms and hands are very human like, though with slightly thicker fingers and a leathery palm. Their heads are a bit wider than a normal human's, with a more cat like maw, nose, and eyes, but definitely drawn out in a somewhat human way, and their head sits perched on a fairly normal humanoid neck.
Like this picture here
here, though with a more cat like face (a bit more rounded, ears closer to the top of their head)
The Katara are a race that traces their origins to smaller wild cats, though scholars debate which ones in particular. Unlike their wilder feline cousins, the Katara do not have claws, nor are their teath as sharp as their wilder bretherin. Katara fur comes in a variety of colors and patters, and stripe or spot patterns are usually distinctive of a particular clan. Some clans have more noticable human fiacial and head hair, and some others have what resembles a mane (and in rare cases, both).