According to CBS News, more than half of all canine pets in the U.S. are overweight or obese. It’s a sad fact that dogs are gaining too many pounds these days from calorie-laden snacks and treats, causing problems to their digestive health and immune system among a slew of other complications. What’s worse, owners are often unaware of the actual reasons for the obesity and don’t realize they’re the ones responsible for it in the first place. Factors that influence whether or not a dog is or will become overweight Food Clearly the front runner for dog obesity, the amount of food you give your dog is often…