Cooking for a dog is appealing: you know exactly what goes in, you control the quality, and for a fussy or unwell dog it sometimes solves a problem nothing else does.
It is also much harder to get right than it looks, and the evidence on that is unusually clear.
What the research found
Several studies have analysed published home-prepared recipes for healthy adult dogs — from books, websites and veterinary sources.
The findings were consistent. The large majority failed to meet established nutrient standards, most had multiple deficiencies, many gave vague instructions (“a small amount of liver”), and only a small minority were written by anyone with formal nutrition qualifications.
Studies looking at recipes for dogs with specific diseases — kidney disease, for instance — found similar problems, which matters more, because those are precisely the dogs with the least margin for error.
Which nutrients go wrong
The commonly deficient ones:
Calcium, and the calcium-to-phosphorus ratio. Meat is high in phosphorus and low in calcium. A diet of meat and rice with no calcium source produces a profoundly unbalanced ratio, and in a growing puppy that causes skeletal disease that cannot be undone.
Vitamin D, which is difficult to supply from ordinary ingredients.
Vitamin E, zinc, copper, iodine, choline — all frequently short.
Essential fatty acids, particularly EPA and DHA.
Deficiencies of this kind develop slowly. A dog can look fine for months on a diet that is producing a problem, which is why owners are often confident it is working long before anything is visible.
What doing it properly requires
A recipe formulated by a board-certified veterinary nutritionist for your individual dog. Not a website, not a book, not a Facebook group, not an app.
A nutritionist will account for your dog’s age, weight, body condition, activity, health conditions and medications, and will specify a supplement regime — because a home-cooked diet essentially always needs one.
Several services offer this remotely for a one-off fee, which is modest set against the cost of treating a deficiency.
Following the recipe exactly. Substitutions break the formulation. If a recipe calls for a specific vegetable, changing it changes the mineral profile. Weigh ingredients rather than estimating.
Using the specified supplement. A general multivitamin is not a substitute for a formulated supplement blend.
Regular veterinary monitoring — body condition, bloodwork, and a review of the diet at least annually and any time your dog’s health changes.
Consistency. Batch cooking and freezing in portions helps enormously, and it removes the temptation to improvise on a busy evening.
Legitimate reasons to home cook
- Multiple food allergies, where no commercial diet is suitable
- A dog who will not eat commercial food despite proper efforts
- Specific medical conditions where a bespoke formulation is genuinely advantageous
- A strong owner preference, held with open eyes about the work involved
All of these are reasonable. What is not reasonable is switching to home cooking because a website said commercial food is bad, and then feeding chicken and rice indefinitely.
The chicken and rice problem
Plain boiled chicken and white rice is a perfectly good short-term bland diet for a few days after digestive upset.
It is severely deficient as a long-term diet. It is short on calcium, essential fatty acids, several vitamins and several trace minerals. Dogs fed it for months develop real problems.
If your dog needs a bland diet for more than a few days, ask your vet for a balanced alternative rather than extending the chicken and rice.
Food safety
A home kitchen producing dog food needs the same discipline as one producing human food:
- Cook meat thoroughly
- Separate boards and utensils for raw meat
- Cool quickly and refrigerate within two hours
- Use refrigerated food within three days
- Freeze in portions, and thaw in the fridge
- Wash bowls daily
Ingredients to keep out
- Onion, garlic, leeks, chives, shallots
- Grapes, raisins, sultanas, currants
- Xylitol, in any form
- Macadamia nuts
- Chocolate
- Cooked bones
- Excessive salt
- Raw bread dough
- Alcohol
The middle ground
If the appeal is fresh food rather than full control, there are options with fewer failure modes:
Commercial gently-cooked complete diets. Fresh, minimally processed, and formulated to meet nutrient profiles. More expensive than kibble, less risky than home cooking.
A complete commercial base plus fresh toppers. Keep the base at roughly 90 percent of calories and add a spoon of cooked meat, sardines, or vegetables on top. This gets most of the appeal with none of the formulation risk.
Using fresh food as training treats rather than as the diet.
The honest summary
Home cooking for a dog can be done well, and when it is done well it is a perfectly good way to feed a dog.
Doing it well requires a formulated recipe, a supplement regime, weighing rather than estimating, and periodic veterinary review. Doing it from a recipe you found online is substantially more likely to harm your dog than feeding a well-made commercial food would.
That is not an argument against cooking. It is an argument for getting the formulation from someone qualified to write it.
