Forcing too much exercise – In older dogs especially, osteoarthritis is common. A decrease in activity caused by the joint pain of arthritis may be what led to the weight gain in the first place or perhaps at least contributed to the problem. Your first inclination may be to put your dog into some sort of homegrown boot camp program, but it’s best to take it easy at first.

Forcing exercise for extended periods or exercise that it too strenuous in nature may predispose your overweight dog to injuries that will sideline him for several days or even weeks, slowing down weight loss even more. Start with three to four brisk 20- to 30-minute walks per day, and once the weight starts coming off, you can consider beginning some jogging and games of fetch or chuck-it in a secure setting.