Pet food discussions can become strangely moral. Kibble is described as lazy, raw food as natural, home cooking as loving and prescription food as commercial manipulation. None of those labels tells us whether a particular diet meets a particular animal’s needs.
Start with the patient. Dogs and cats differ, and a growing puppy or kitten has different requirements from a healthy adult. Pregnancy, lactation, obesity, kidney disease, urinary disease, gastrointestinal disease and food-responsive conditions can all change what ‘suitable’ means. A diet that works beautifully for one animal may be inappropriate for another.
What ‘complete and balanced’ means
A complete diet is formulated to provide all essential nutrients in appropriate amounts and proportions for a defined species and life stage when fed as directed. It is not a promise that every animal will tolerate it, and it does not mean the diet treats disease. It is, however, a far more useful starting point than judging a food from the first few ingredients on the label.
Five questions worth asking
- Is it intended for my pet’s species and life stage?
- Is it complete and balanced, or is it a complementary product, topper or treat?
- Who formulated it, and what veterinary nutrition expertise is involved?
- What quality-control, nutrient analysis and manufacturing checks does the company use?
- Can I feed the correct amount consistently while monitoring weight, body condition, appetite, stools, skin and overall health?
The ingredient list cannot answer everything
Ingredient lists are useful for identifying ingredients and complying with labelling rules, but the order alone does not establish nutrient quality, digestibility, bioavailability or clinical suitability. Terms such as ‘human grade’, ‘premium’, ‘ancestral’ and ‘holistic’ can be persuasive marketing while telling us little about whether the finished product meets the animal’s needs.
Why can some pet foods cost more?
A higher price may reflect meaningful investment: specialist nutrition and formulation expertise, tighter ingredient specifications, finished-product nutrient analysis, microbiological and toxicological testing, digestibility or feeding studies, clinical research, therapeutic nutrient targets, specialised ingredients, smaller production runs and access to technical support. Those features can provide real value. Price alone, however, cannot show that every one of those safeguards is present or that the food is appropriate for a particular patient. The useful question is what evidence, expertise and quality systems sit behind the price.
Commercial, fresh, home-cooked and raw diets
Format is not a verdict. A well-formulated commercial diet can be appropriate; a properly formulated cooked home-prepared diet can also be appropriate. For long-term feeding, a home-prepared recipe should be designed for the individual patient by a board-certified veterinary nutrition specialist, such as an ACVIM (Nutrition) or ECVCN diplomate, or an appropriately qualified veterinary professional working within their competence and with access to specialist support. The recipe must then be followed accurately. Small substitutions can materially alter calcium, phosphorus, trace mineral, vitamin and energy provision, especially in growing animals or patients with disease.
Raw diets add a separate food-safety question. The current evidence does not establish unique health benefits that outweigh the documented risks of pathogen contamination and nutritional imbalance. This is why I do not recommend raw feeding, particularly for puppies and kittens, pregnant animals, pets with significant illness, or households containing young children, older people, pregnant people or anyone who is immunocompromised.
Changing foods
For a healthy pet, a gradual transition over roughly a week is often easier on the gastrointestinal tract: start with mostly the old food, increase the new food in stages and slow down if mild digestive signs develop. A veterinary therapeutic diet, elimination trial or diet for a sick animal may require different instructions, so follow the prescribing team’s plan.
A useful bowl check
- Measure the daily ration rather than repeatedly topping up the bowl.
- Keep treats and extras modest; as a general guide they should not displace more than about 10% of daily energy unless the diet plan says otherwise.
- Track body weight and body condition, not just whether the bowl was finished.
- Ask for help if appetite, vomiting, diarrhoea, thirst, urination, skin or weight changes persist.
The best diet is not the one that wins an argument online. It is the one that safely and reliably meets this animal’s needs, with enough evidence and quality control to justify confidence in it.
KEY TAKEAWAY BLOCK
The best diet is not the one with the most persuasive marketing story. It is the one that safely and consistently meets this animal’s nutritional and clinical needs.
Further reading: Switching your pet to new pet food on Pets24.
Frequently asked questions
Does paying more mean a pet food is better?
Not automatically, but price is not meaningless. More costly foods may include specialist formulation, controlled nutrient profiles, extensive quality assurance, research, feeding or digestibility studies, specialised ingredients and technical support. Veterinary therapeutic diets may also be produced in smaller volumes for defined clinical purposes. These features can justify a higher cost. The distinction is that price alone does not prove they are present, nor does it establish that the food suits this individual animal. Ask who formulated the diet, how the finished product is tested, what evidence supports its intended use and whether the patient is responding as expected.
Should meat always be the first ingredient?
Ingredient order is influenced by ingredient weight and water content before processing. It cannot, by itself, tell you whether the final diet supplies appropriate nutrients in usable amounts.
Can I cook for my pet?
Yes, a properly formulated cooked diet may be appropriate. Long-term recipes should be designed for the individual animal by someone with recognised veterinary nutrition expertise and followed accurately.
Does my healthy pet need supplements?
A diet demonstrated to be complete for the intended species and life stage should supply essential nutrients when it is fed as directed and provides the appropriate daily energy. Unnecessary supplementation can alter nutrient balance or interact with disease and medication. Supplements may be indicated for a defined clinical purpose, but the goal, dose, formulation and evidence should be discussed with the veterinary team.
References
- Freeman LM et al. WSAVA Nutritional Assessment Guidelines. Journal of Small Animal Practice. 2011;52:385-396.
- Cline MG et al. 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats.
- Villaverde C, Chandler M. Commercial versus homemade cat diets. Veterinary Clinics of North America: Small Animal Practice. 2022.
- Pedrinelli V et al. Analysis of recipes of home-prepared diets for dogs and cats. British Journal of Nutrition. 2017.
- WSAVA Global Nutrition Committee. Guidelines on Selecting Pet Foods. Updated 2021.