The Tchuukthai, also known as Wharls, are sapient ceratopsian quadrupeds from the Unknown Regions. They have bristly fur on their shoulders and back, while natural armor plating covers their head, joints, and vital organs. Even where there is no armor, their skin is thick and leathery, offering natural protection. Those few that have dealings with other species generally wear clothing, while others do not.
The Tchuukthai were considered semi-mythical non-sentient creatures for millennia. The Tchuukthai encouraged, and possibly propagated, this view with displays of bestial ferocity that discouraged explorers and curious visitors. Their quadrupedal nature and inability to speak Basic with their fang-filled mouths only reinforced the misconception. A number of famous love poems were composed by Tchuukthai, although they translate poorly into Basic.
A Jedi Master befriended the Tchuukthai later known as Thon, who was instructed in the Jedi arts and eventually became a Jedi Master himself around the time of the Great Sith War. Thon's nature was unknown even to most Jedi for millennia, though it's possible others of the species left (or were taken from their unknown homeworld as captive beasts) into the galaxy. Bureaucrats from the Galactic Republic Bureau of Xenology labeled Thon a "Wharl", though the Jedi Master declined to refute or acknowledge the designation or any other speculation as to his origins.
The Tchuukthai are generally quite thoughtful, and although they often put on displays of ferocity for outsiders, disdain fighting. Some enjoy meeting outsiders while others prefer to be left alone. And believe us, you'd best respect their wishes.