My 4 year old Pug/Terrier mix keeps marking on practically everything inside the house. I work on obedience with him, take him outside every day for walks or go to a dog park so he can socialize. He is neutered, and my mom threatens to give him to another home, or take him to the vet to have him euthanized. I don't know what to do. I want my dog to be a proper citizen and respectful, and him urinating makes me frustrated. Sometimes, I have to keep him in a large kennel so he doesn't keep marking on stuff upstairs.
Any advice would be appreciated, and I'm running out of time with him. My mom just left the house saying, "You better start saying your goodbyes!"