I had a pup that resembled yours in a litter of mine once. He tended to get larger than the rest and had extremely slow hair growth. His hair did eventually get some length to it. His owner absolutely adores him and wouldn't trade him for any other. He is now 2 and I still get updated pictures and told how much he means to her and her family. Your guy is a cutie and looks like he has a lot of love in store for you!