I had a pet racoon once. Rescued as a baby after the mother disappeared. Had to bottle feed him & everything. He used to wash his hands the same way, even his food he would dip in the water bowl & wash it off. When he got a little bigger he lived in a big tree beside our house, & eventually moved on
to find a mate, I assume, which is for the best because the bigger he got, the meaner he got. He loved to wrestle and his playful biting & scratching got a little too aggressive, haha.