A childhood belief about church

I used to believe that my cats were catholic. You know how catholic people do the sign of the cross thing, where they like touch their forehead, and their heart, and their shoulders (or however they do that). Well my cats lick their paws, and touch over their heads with it. When they licked their paws I thought they were trying to touch their hearts, and then their forehead,(but they can't touch their shoulders with their paws), so they did a partial cross. Why else do they call it CAThoLIC(K).