I have a white GSD. A friend told me that white GSDs tend to run larger. I have no idea if this is true. But my dog just turned 3, took him to the vet for a check up, and he weighs 120 pounds. The thing is, he does not LOOK fat. I think it would be healthy for him to lose a few pounds, however. For the time being, I am trying to make sure he doesn't jump when we play - rather try to walk and run with him on level ground or just a gentle incline. Feeding him more omega-3 rich meals. So far he seems to move OK and no issues with pain, but these dogs will hide pain so it's up to me to keep an eye on this. Anyway, here is a picture of him. I think if we can just get him down a few pounds, we should be OK?