What's up guys, you have helped me already with dog food so lets see what you think. My pitbull just had puppies. I am going to keep one. I want to have it on a spring pole and flirt pole ect. But I want to give it that advantage and get a muscle building supplement. The supplements I am looking at are BullyMax, GorillaMax, MVP MASS Muscle Builder & Performance, and BuffK9. I am thinking about feeding it BullyMax no matter what with an additional muscle builder because it's a vitamin as well. I just need to know who has used this and which one showed improvement faster and better. If it's possible I would like to see pictures of your dogs on these supplements. Btw the father of the pups is already muscular and I don't work him out as much as I plan to with the pup, when it's the right age of course. Thanks again guys and please no unnecessary posts.