Richie1234 said:
really?!? Thank god, I got so worried, I was thinking about buying foods that have more protien.
yep, he looks fine and i wouldn't try to fatten him up at all. vizslas tend to be pretty thin as puppies compared to many other breeds, but that is normal. his chest will drop and he'll fill out as he matures, and you don't want an overweight dog.
in case you haven't read it yet:
http://www.news.cornell.edu/Chronicle/02/12.12.02/dog-diet.html
however, if you can get a hold of a better food than royal canin (e.g. innova, eagle pack, solid gold), i'd recommend switching.
feel free to start a thread on the topic in the nutrition forum if you want to discuss in more detail.