My dog Buddy is really one of a kind I saved him from going to the shelter so i think hes full grown but hes definitely young like maybe a year. I want to breed him since hes so well behaved and smart. It would be of so much help if you can tell me what kind of terriers you think were mixed to get this dog. Maybe since Ive never seen a dog that looks like him that hes the result of many different mixes. I have no clue.