Hey everyone, my dog eats good and he just loves to excercise. Ive always known he was skinny, but now you can see each individual muscle rips in his back, and the veins in his legs and everything like that is popping out. Today we just got him back from the kennel on our vacation and he was sitting on the couch next to me and i could see complete definition on his muscles. I want him to put on weight, i feed him a mixture of about 3/4 eukanuba and iams both for puppies hes 9 months old and weighs 53 lbs. What can i do to help him gain weight.