The use of exotic masks in Red Dead Redemption 2 is not just a whim of the player. Masks are very useful in robberies, as they help the main character hide his face, so that later it was more difficult to identify and, consequently, harder to catch. Some people prefer standard methods of disguise, for example, using a bandana. And someone is more interested in finding something more original.
One of the options for non-standard disguise can serve as a mask in the form of a cat's skull. It can be found in Bayou, in a place called Lacaille, a little North of Saint-Denis. On the way to the village, turn right at the end of the road. There will be a hut, in the back room on the wall of which the desired object will hang.