Signs of Obesity
It is easy for obesity to sneak up on you. One day you may suddenly look at your dog and wonder when he put on so many extra pounds! Dogs who maintain a healthy weight for years on the same amount of food may slowly start to gain weight as their exercise level and metabolism decline as they reach their senior years.
An easy way to tell whether your dog is overweight is to run your hands along his sides. If you can easily feel his ribs, and there are no excess rolls around his neck, his weight is probably satisfactory. However, the only real way to determine if your dog is maintaining a healthy weight is to have him weighed by a veterinarian.