My basset Berkley is 5, and I have begun to put him on the sun porch with my two chihuahuas during the day. I am home and I let him out every hour or so. The oldest chihuahua is a marker, but the basset has never marked territory. He usually pees in the same spot in the middle of the floor. I will rub his nose in it and say 'Bad dog!" then let him out. He will pee again and then I will let him in. Then within an hour or so he will pee again. Even if he has had no water. I took him to the vet but he couldnt get a urine sample because Berkley peed before we left. He prescribed some Deramaxxx and Amoxi but I have seen no improvment. Could it be something serious or is he just being a turd?