My male 1 year old Boxer seems really skinny to me. He is on Solid Gold's Wolf King. I feed him twice a day, 2 cups at a time. His ribs are prominent, and I can see his spine. Other than the way he looks he acts normal, and has lots of energy. When I rescued him 4 months ago he weighed 55lbs......I don't think he has gained any weight since. The vet told me he was healthy, no worms or parasites, so I know its not worms. Should I put him on a higher fat, higher protein diet. I was leaning towards the Wellness Core series. Any suggestions...is it because he is still not filled out yet??