Is my dog too thin?

May is very thin....I can feel her ribs very easily and she just looks very thin....but we had her weighed and the vet said her weight is perfect - 63 lbs..

Looks good to me too. Some days you can see Belly's ribs too, somedays she's all pudge, lol. She just gains and loses weight very easily.

Maybe you could spice it up for him? Some yougurt, or little itty bits of cheese, peices of raw meat too. So many things you could add!

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.