Veterinary snack to assist with weight loss. We have all been there. Your four-legged friend has to go on a diet, and this marks the start of a stressful time – and not just for the dog! It is so hard to resist the appeal of those big brown eyes, and one or more treats inevitably finds its way into your dog, even while he is dieting. Even if you are giving your dog a specific weight loss food, like the Happy Dog VET Adipositas diet, it is still essential to adhere strictly to the specified calorie count for the diet to be successful.