what up evreybody i got a 15 week old PittBull, solid buck skin brown and weighs in at 25 pounds, i have been running into alot of breeders that say to feed him Liquid B-12, to put it in his food or a dog treat, and that he will gain some quality muscle mass, off of this B-12, has anyone ever heard of this method of tried it ?? or do you have any other suggestions,