I’ve got situation with my min pin mix. He’s about four years old. He pees and poops in the house. I can go into more detail but just for some context he’s peed twice on my husbands side of the bed in the last week. Recently peed on our couch and brand new slip covered chair. We have a fully fenced yard with a wide open back door (on nice days)and doggie door on others. We have two other dogs as well. No house training issues for either. Any recommendations? He seems to be doing this on purpose.