My Ivan was 6 months old when he came to his forever home on August 2nd. He didn't bat an eye and you'd have thought he was with us since the day he was whelped. I wouldn't let a healthy, socialized pup at any age be a concern as to whether you should bring him home or not. Truth be told, it was quite nice as I didn't have to be bothered with the potty training, all the shots, trips to the Vet, etc. that you have with a new puppy.