I have a one an a half year old grey and pink sphynx. He gets dirty a few days after a bath or a wipe down. I usually only bathe him once a month. Yesterday I noticed these brown spots that feel “raised” on his belly and his skin looks irritated too. I just bathed him and the spots are still here (pics are after the bath). Any tips on what this might be? I do use pine litter so I’m thinking that could be one reason. Thanks!