The pet food diary your vet actually asks for
List every food, treat and chew with brand, form, amount, times a day and start date, as the WSAVA diet history asks. Two ordinary weeks is a sensible start.
“What is she eating at the moment?” It is the easiest question at the appointment and the one that gets the worst answer. The blue bag. The one from the big pet shop. Chicken, I think. Meanwhile the dog on the table has been on a different formula since June, gets two dental chews a day from whoever gets home first, and takes a tablet wrapped in cheese every evening.
A pet food diary is a list of everything that goes into your animal, with five things recorded against each item: what it is, what form it takes, how much, how often, and when it started. Treats and chews and the cheese around the pill all count. Kept for two ordinary weeks, it turns that guess into an answer, and the daily entry is a line long.
Why does the vet ask what your pet eats?
Because diet shapes more appointments than owners expect, and because it is one of the few things the clinic cannot measure in the room.
The World Small Animal Veterinary Association built its Global Nutrition Guidelines around exactly this problem, and its Global Nutrition Committee publishes a Nutritional Assessment Checklist designed around a quick nutritional screening on every patient at every visit, with a longer evaluation when something looks off. The guidelines were first launched in 2011 and now carry endorsements from around forty veterinary associations and colleges, the American Animal Hospital Association and the British Small Animal Veterinary Association among them.
Screening every patient at every visit only works if somebody in the room knows the answer. That somebody is you.
What goes in the diary?
The WSAVA publishes an owner-facing Short Diet History Form, which is the closest thing to a specification a food diary has, because the committee that wanted the information wrote down exactly what it wanted. It asks for the brands and product names and the amount of all foods, treats, snacks, dental hygiene products, rawhides and any other foods your pet currently eats, including foods used to administer medications. Per item, it wants five columns.
| Column on the form | What it means in a real kitchen |
|---|---|
| Food | Brand and exact product name, not “the blue bag” |
| Form | Dry, moist, raw, home-cooked, pan-fried |
| Amount | A measured quantity, so 1½ cups rather than “a scoop” |
| Number | How many times a day |
| Fed since | The month you started this one |
The form also asks how active your pet is, whether you think they are overweight, at an ideal weight or underweight, and where they spend most of their time. Those three take one tick each and give the clinician context for the rest.
Four of the five columns you can reconstruct from the cupboard. Fed since is the one you cannot. Nobody remembers in March which week in September the food changed, and that date is precisely what makes a diary worth more than a photograph of the bag.
Why do the treats never make it in?
Because treats do not feel like food. They feel like an event, and events do not get counted.
Look again at what the form asks for: treats, snacks, dental hygiene products, rawhides, and foods used to administer medications. That last category is the one that surprises people. The spoon of peanut butter that delivers the tablet is a daily food, given at a fixed time, and it never gets written down because the household files it under medicine.
Dental chews are the other reliable gap. They are sold as a product you use rather than a food you feed, they often live in a different cupboard, and in a house with more than one person they get given more than once. If the diary has a weak spot, it is here.
How long should you keep one?
Long enough to catch ordinary days. A single Saturday tells the clinic what happens on Saturdays.
Two weeks before an appointment is a sensible household default, and it is our recommendation rather than a clinical standard, so ask your vet whether they want something different. If they set up a diet trial, the window is theirs to set and it will be considerably longer than two weeks. Reconstructing a fortnight the night before produces a tidy, confident, wrong document.
What breaks when more than one person feeds them?
The same thing that always breaks: two people each assume the other did not, or did. A diary kept by one person in a house where three people feed the dog records one person’s version of events.
What fixes it is a record everybody can write to, where each entry carries who did it and when, so the diary holds what happened and not what somebody recalls. We covered the kitchen mechanics of that in feeding multiple pets when more than one person feeds them, and the same argument is why a medication schedule needs a shared log rather than a shared intention.
What the label will not tell you
Record the brand and the exact product name, not the ingredient list. Formulas within one brand differ, and the product name is what identifies which one you have. If a recall is announced, you’ll also want the lot number and date from the bag, and what to keep when a pet food is recalled explains the check.
The WSAVA’s guidance for owners on selecting a pet food asks who formulates the diet and how the manufacturer checks ingredients and finished products. An ingredient list does not answer those questions. Keep the exact product name so your veterinary team can identify the formula; you do not need to copy the ingredient list into the diary.
If you are comparing products before buying, start with the pet food label reading order: intended species, life stage and nutritional adequacy come before the ingredient list.
What a food diary does not do
It will not tell you whether a food suits your animal. That is a judgement about the animal in front of the vet, made with the weight trend, the physical examination, and whatever else is going on. A diary supplies one input to it.
Nor does it settle an argument about what your pet should eat. Portions and diets belong to your veterinarian, and this piece is deliberately about the record rather than the menu. What the record does is take the guessing out of the conversation, which is the half you control. The rest of that record, from vaccines to weights, is in the guide to pet health records.
Where Dana fits
Dana’s Food Scanner answers the adjacent question before the diary entry exists: photograph a food, a treat or an ingredients label, and each of your pets gets its own verdict, with a portion and a frequency when the answer is yes. Each meal and treat you log lands on the pet’s timeline with who gave it and when, on the same pet as the weight entries in its health record, so the fortnight before the appointment is already written down. And because Dana is built for households, every entry carries who made it, which is what stops the dental chews going uncounted.
Questions people ask
What should a pet food diary include?
Every food, treat, chew, dental product and anything used to hide a pill, and for each one the brand and product name, the form it comes in, the measured amount, how many times a day, and roughly when you started feeding it. That last field is the one nobody can reconstruct later.
Do vets actually want this?
The WSAVA's Global Nutrition Committee publishes a Short Diet History Form for owners to fill in, and a Nutritional Assessment Checklist built around screening every patient at every visit. The form exists because the question gets asked at almost every appointment and is almost never answered precisely.
Do treats really need to go in?
Yes, and the WSAVA form spells out the categories most people leave out: treats, snacks, dental hygiene products, rawhides, and foods used to administer medications. The cheese around the tablet is part of what your pet eats.
How long should I keep a food diary?
Long enough to cover ordinary days rather than a good week. Two weeks before an appointment is a reasonable household default. If your vet sets up a diet trial, they set the window and it is usually much longer.
Should I copy the ingredient list into the diary?
No. Record the brand and the exact product name, which is what identifies the formula. The WSAVA's own guidance for owners notes that the ingredient list gives no information on the quality of the ingredients and can be very misleading about the overall quality of a food.