image of a fat dog on a weighing scales

Fat Dogs, Feed Them Fresh Not Less!

Obesity figures are soaring in dogs, from approximately 22% of the dog population in the 1980s (Edney and Smith 1986; Donoghue et al. 1991) up to 40% of dogs in Western countries today (McGreevy et al. 2005). Coincidentally, this matches the increased usage of commercial dry food which contains a belly-busting 50-60% cereal (wheat / corn). And we wonder why we have so many fat dogs?!
If your diet consisted of 60% bread you’d put on a bit of weight too!
Dr. Conor Brady, 2017
In December 2010, a study by MORE TH>N Insurance Company found over half of the cats in Britain will be too fat for the standard cat flap within the next ten years. Incidentally, in response to this trend, MORE TH>N developed a larger cat flap – The Fat Flap!. It is twice the size of the standard cat flap, equipped with conveyor belt to automated door with paw recognition software. Seriously.

4A Fat Dog is as Healthy as a Fat Child

It is not surprising that obesity causes the same health problems in dogs as it does in humans. The excess energy from fat stores, fuels growth in young dogs at maximal rates – as opposed to optimal. Their bodies cannot withstand maximal growth rates for long. Coupled with the greater load to carry and you get orthopaedic disease and ruptured cruciates.

Specifically in relation to labradors it has been shown that an elevated energy intake (via ad lib feeding) increases the incidence of skeletal disease, hip dysplasia and osteoarthritis (Kasstrom 1975, Kealy et al. 1992, Hazewinkel 2012 cited in Fascetti and Delaney 2012).

In the most extensive and controlled study of its kind, Lawler et al. (2008) housed 48 labradors, all born around the same date, for the entirety of their life. They randomly split the group in two, overfed one group and fed the other group 25% less calories. In this study, major lifetime observations included 1.8 years longer median lifespan for the diet-restricted dogs and the delayed onset of late life diseases, especially osteoarthritis.

Aside from orthopaedic issues, obesity in dogs is linked to causing diabetes mellitus, pancreatitis, cardiorespiratory disease, urinary disorders, reproductive disorders, neoplasia (mammary tumors, transitional cell carcinoma), dermatological diseases and anesthetic complications (Fleeman and Rand 2005, German 2006Lund et al. 2006), all of which are rising alarmingly in dog populations world wide.

So there’s never a time for a dog to be fat (or kids for that matter). Unfortunately, this simple fact has not yet filtered down to many dog owners. In a survey of 1,104 American pet owners, 356 (32%) reported that their pets were overweight or obese but, incredibly, only three people considered this obesity to be a health concern for their pets (Freeman et al. 2006).

dry food containing 50% cereal makes fat dogsFour Main Reasons for all the Fat Dogs…

A dog is likely to be overweight for three reasons:

1. They are being fed a diet consisting of 50% cereal (i.e. 50% carbohydrates): This would be the case in many dry fed dogs diets and is very contrary to what a dog would normally eat, given the chance.

2. They are being fed high in fat “pet” mince of “beef”, “lamb”, “rabbit” or “venison”: This type of meat is usually for an incredibly low price which meats do not normally cost. How do you think they are able to charge these low prices? One way is by finely grinding carcass and selling it as “meat” (buyers do not easily notice the difference). However the common way is by using fat and blood as the main constituents (this looks exactly like minced meat).

3. The dog is not as active as usual (getting old, injured or bad weather) and is being fed too much food for their activity level’s: It is important to keep an eye on your dog’s activity levels and adjust their dietary intake if they have slowed down for any reason. It is also worthwhile paying attention to how many treats they are given as to many can lead to an increase in body weight.

4. He is neutered and neutered dogs retain more fat due to hormonal disruption, mainly the removal of tesotosterone. We strongly advise not neutering dogs until they reach sexual maturity. For more on this please check out our successful article on neutering dogs.

light dry dog food is NOT the way to go with fat dogs
MENSWEAR Spring_Summer 2005 D and G by Dolce Gabbana

Do Not Feed Dry Light Dog Food To Fat Dogs

Please ignore your vet on this one. Dry food is one of the worst food stuffs out there for a carnivore, second only to “light” dry food. What they have done is bulked the normal kibble with indigestible plant cellulose, often by reducing the protein content further (as it is cheaper for them to reduce this component than the fat-causing but carbs portion). This is similar to a runway model chewing tissue paper to feel full, without adding calories. All this does is make an already nutrient defunct food even worse. This method of weight loss will make the body run dangerously low on good quality protein and energy, reducing muscle mass and slowly destroying the health of the patient over time.

Muscle mass is not the weight you want to lose. The most important thing is retaining lean muscle mass whilst reducing the fat. Think of a human gym goer. They tend to focus on lots of fresh protein (meat and veg) for building muscle and reduce their carbohydrate (cereal, pasta etc), which is fast energy. Unlike protein as such, excess carbohydrates can be stored as fat. This is the way omnivores should do it. Your dog is a carnivore so their need for meat and no carbs is even greater.

Fat Dogs, What To Do

Dogs are carnivores, all they should normally eat is protein (meat) and fat, so it is very important for those two components to be the main parts of their diet. With this in mind, the carbohydrates need to be cut out of their diet and the intake of fresh protein needs to be increased. In other words, feed them a lower calorie diet consisting of lean, fresh meat. Easy!

They do not need to eat less food packed with indigestible plant fibre, as it will starve them of vital nutrients. Feed them good sized meals that are slightly lower in calories. Remember, losing weight does not have to be hellish.

This high protein, low fat, zero carb approach will reduce fat stores slowly, while at the same time retaining the lean muscle mass underneath, which is vital

Recommended Diet for A Fat Dog

Remember, fat dogs should be permitted to eat as much food as is appropriate for their body size, just like their leaner counterparts it’s just that the mix needs to be lower in calories. That’s the secret. The poor thing doesn’t need to go round hungry and scavenging.

What to Feed Fat Dogs:

10kg of lean mince: Chicken, turkey or whitefish.

2-3kg of steamed veg: Bag of green beans, peas, carrots.

Find your chicken or turkey in local supermarkets (keep an eye on the reduced price aisle!). Or, if you don’t want to make them yourself buy a pre-made meat mix. I’m long enough in the pet food world to know that I don’t actually buy dog food anymore. I now buy my stuff from butchers and make it myself. For treats use baked lean meat (such as a crown of turkey, chicken breast, duck hearts).

Feed 3% of their body weight per day if active, 2.5% if not. At least two meals a day.

raw dog food makes slim dogs

What NOT to Feed Obese Dogs

No red meats. Beef, duck, pork. Tend to be fattier.

No carbs. Rice, potatoes, bread etc.

Most treats: No more dental sticks. No more rawhide chews (these are skin which is pure fat). And while we love raw meaty bones careful with fat dogs as raw meaty bones tend to have a lot of fat (butchers don’t make money by dumping meat!).

For more on what not to feed dogs please click the link!

a healthy dog running through a field showing he's free of allergies in dogsDon’t forget the exercise!

Walks: Fat dog’s do not need long walks. The obesity that is destroying their health and shortening their lives, is already ruining their joints. Long walks speed up this process, so shorter walks but more frequently are the key (15-20mins).

Swimming: To keep the pressure off their joints as they lose weight they can go swimming. Simply stand on the other side of the pool with a healthy treat such as a carrot.

Other Tips for the Minders of an Obese Dog

Pick up a cloth measuring tape and run it around their stomach (behind the rib cage, as the diagram on the left is demonstrating). Record the measurements each time this is done to maintain a record of their dimensions.

Keep a record of the dog’s weight. If they are not losing weight after a week, then reduce the amount fed to them by 10%.

Note the nice tuck you see behind the ribs of both dogs? That’s what you’re aiming for in most dogs. He’s not supposed to be barrel shaped! Ring a breeder and ask them to send you some photos of lean dogs, that’s what you’re aiming for. It will save their health, your money and increase their longevity greatly.

a sketch showing the outline of a dog with a red line indicating the positioning of the cloth measuring tape
how to measure the dog’s waist!



Donoghue, S., Khoo, L., Glickman, L. T. and Kronfeld, D. S. (1991). Body condition and diet of relatively healthy older dogs. Journal of Nutrition, 121: S58–S59.

Edney, A. T. B. and Smith, P. M. (1986). Study of obesity in dogs visiting veterinary practices in the United Kingdom. Veterinary Records, 118: 391–396.

Fascetti, A.J. And Delaney, S. J. (2012). Applied Veterinary Clinical Nutrition. John Wiley and Sons. Chapter 10. Nutritional Management of Orthopaedic Diseases by Herman Hazelwinkel.

Fleeman, L. and Rand, J. (2005). Beyond insulin therapy: Achieving optimal control in diabetic dogs. Brisbane, Australia: Centre for Companion Animal Health, University of Queensland.

German, A. J. (2006). The growing problem of obesity in dogs and cats. Journal of Nutrition, 136: 1940S–1946S.

Kasstrom, H. (1975). Nutrition, weight gain and development of hip dysplasia. Acta Radiologica, 334: S135–179.

Kealy, R. D., Olsson, S. E., Monti, K. L., Lawler, D. F., Biery, D. N., Helms, R. W., et al. (1992). Effects of limited food consumption on the incidence of hip dysplasia. Journal of the American Veterinary Medical Association, 201: 857–863.

Lawler, D. F., Larson, B. T., Ballam, J. M., Smith, G. K., Biery, D. N., Evans, R. H., et al. (2008). Diet restriction and ageing in the dog: Major observations over two decades. British Journal of Nutrition, 99: 793–780.

Lund, E. M., Armstrong, J. P., Kirk, C. A. and Klausner, J. S. (2006). Prevalence and risk factors for obesity in adult dogs from private US veterinary practices. Journal of Applied Research Veterinary Medicine, 4(2): 177–186.

McGreevy, P. D., Thomson, P. C., Pride, C., Fawcett, A., Grassi, T. and Jones B. (2005). Prevalence of obesity in dogs examined by Australian veterinary practices and the risk factors involved. Veterinary Records, 156: 695–707.

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