How old is he? I would definitely start him on Cosequin to help prevent arthritis.
He is almost 9 months old and the last time he was at the vet was for his neutering about 3 months ago. They didn't say anything at the time. I'm going back in in about 3 weeks for a new Heartworm prescription, I'll have him take a peek at him and see what he thinks....He's almost 11 pounds.