Encountered one who was yellow to a 35. Also they are tenaciously aggressive. Stuns, eye of confusion, roots... all bad rolls on my first trip to this area. Think of a hungry big cat with lots of nerve - add the smell of blood - viola !
(Oh? did I say I literally witnessed a 51st Dwarven Vicar run from two of these... gofigger!) [and no... not the corrupted panthers...]
These and the haze panthers con too low for their difficulty so be careful. They have more hp, hit harder, and are more magic resistant than similar level non-SoV mobs. As far as I can tell they seem to be random spawns. There are usually a few pathing near Wuoshi, but if you don't have good dragon faction I'd suggest avoiding that area. Not seen a pelt drop yet so it's either uncommon or I've been unlucky.