What would be the best way for my Doberman to gain healthy weight?
I have a doberman that is a little over a year old. I just took him for his yearly checkup the other day and he is only 58 pounds, which is about 20 pounds under breed standards. The vet said he is very healthy but wants to see more weight on him. I would love some suggestions on how to add healthy weight and muscle mass to my dog.

my dog jst plays around to much i want him to calm down but he wont nd i want him to get taller dan he is nd i want him to get fatter nd to be agressive