I don't own dogs (cats are out animal of choice) but I know enough of them to know most are very smart and highly trainable. You pet sounds like a real joy; happy to see you and excited about going anywhere with you. You're very lucky. Please, invest some time and money and get him the professional training he deserves so you both can enjoy your life! There are very few dogs of his breed that can't be trained to do, or not do, almost anything. Good luck to you both. P.S. Please, please don't blame him if you don't train him.