I will defiantly talk to vet about it. I looked at symptoms and he doesn't have any of those. He just went it for his annual checkup and she said he probably would slow down in the next few months. He is an active dog. We live on 2.6 acres with a large hill out front so he is constantly running up and down and all around. I am also hoping the higher protein in Orijen will help. He is doing 7 now bc I am trying to help him gain the weight he lost but he was on5.5 cups before I cut back. I probably shouldn't have increased that much but I felt bad bc he got so skinny. Think i will drop it down to 6 cups as he is almost back to his 75lb weight.