Dog Obesity

In the wild, dogs generally regulate the amount of food they eat. However, there is a trend for modern dogs, like modern man, to eat better food and take less exercise than their predecessors. Just as in people, there is a risk that your dog may become overweight. Obesity is an excessive accumulation of fat in the body – it does not just mean being overweight.

Too Thin

Ribs, spine and bony protrusions are easily seen. Dog has lost muscle mass and there is no observable body fat. Bony and starved in appearance.


Ribs, spine and other bones are easily felt. Dog has an obvious waist when viewed from above and an abdominal tuck. Thin or skinny appearance.


Ribs and spine are easily felt but not necessarily seen. Dog has a waist when viewed from above and the abdomen is raised, not sagging when viewed from the side.


Ribs and spine are hard to feel underneath fat. Distended or pear-shaped waist when viewed from above. The abdomen sags when seen from the side.


Large fat deposits over the chest, back, tail base and hindquarters. The abdomen sags prominently and there is no waist when viewed from above.

  • Is my dog obese?

    It is often difficult for us to see that our own pet is overweight. The weight gain is so gradual that we hardly notice the change. Sometimes you suddenly notice the difference in your dog’s appearance when you look back at old photographs. In most cases it will be your vet who points out the problem.

    When you are stroking your dog next, run your hand gently over his backbone and ribs. In a healthy normal dog you should be able to feel the bones without pressing too hard (if you can see the bones then your dog may be too thin). If you cannot feel the backbone easily then your dog is overweight. If the weight gain is allowed to continue your dog may start to develop diseases as a result.

  • My dog hardly eats anything - is it fat?

    Many overweight animals do not eat very much. It does not take many calories to keep an animal fat. If your dog is overweight it means that he was eating more than he needed for the amount of exercise he was taking at some time in his life. Often obese dogs take very little exercise and so don’t use up much energy and require very few calories.

  • A fat dog looks healthy

    Most obese animals are not taken to their vet because they are overweight. It is usually some other disease caused by obesity that prompts their owner to make an appointment with the vet. Obesity makes it more likely that your dog will suffer from some medical conditions and can result in skin problems. All obese animals are unfit and the extra weight they are carrying puts an unnecessary strain on their joints and heart.

  • How can I help my dog lose weight?

    There are only two ways to lose weight:

    • Increase the amount of energy used, ie take more exercise.
    • Reduce the number of calories taken, ie eat less food.

    Obese dogs are often not very active because it is quite hard work for them to run around. Taking your dog for regular walks (even if the weather is not very pleasant) may help. Some dogs will play with toys, particularly when they are young. Increasing exercise should be used in conjunction with a controlled diet. In most cases, reducing dietary intake to two-thirds of what your dog was eating should permit a steady weight loss. Weight loss should be gradual – over 3-4 months. If weight is lost too rapidly it is more likely to be regained at the end of the dieting period.

  • How do I know my dog is losing weight?

    Your vet will weigh your dog for you and calculate how much weight he needs to lose. Your vet will also be able to suggest how much food you should be feeding your dog. Once you know your dog’s target weight it is up to you to ensure that he sticks to the plan your vet has devised. Many veterinary practices offer ‘weight watcher’ clinics for pets. You can take your dog along at regular intervals to be weighed and a nurse or vet will be on hand to answer any questions or give advice.

    All practices will have weighing scales so it should be possible for you to arrange a convenient time for you to take your dog along and weigh him yourself.

  • What if my dog is still not losing weight?
    A number of low calorie prescription diets are available from your vet. These work in the same way as human slimming foods and allow your dog to eat a normal meal and feel full, without taking in too many calories. If you are finding it impossible to get your dog to lose weight discuss the possibility of a low calorie diet with your vet. In extreme cases your dog may need to be admitted to hospital for a period of time so his diet can be strictly controlled by your vet.
  • My dog has reached his target weight - what now?

    Once your dog has reached its target weight a celebration is called for. This is not the end of the road – rather the beginning of a new life. Just as in people, it is common for an obese animal to regain all the weight that has been lost if he returns to his previous diet. However, you will need to increase his food intake slightly to prevent weight loss continuing. Often dogs become so much more active once they have lost weight that they need to go back to a normal diet to provide enough energy for their newfound enjoyment of life.