Dog care surrounding your dog's weight is important. A visit to your veterinarian should provide you with the information you need. You should be looking at his age and weight combined. The older a dog gets, the more difficult it can be for them to manage being overweight. Work closely with your vet to improve his diet.
Do you have an older dog? Dog care at this age is vitally important to their daily lifestyle. Dogs that have pain in their joints need help getting up onto beds and couches. Create a step system for him to do this. Also, if you have steps leading out of your home, try to find a way to minimize how steep they are as this is painful for many older pets.