Elimination Diet Treats: What Can Your Dog Have During a Food Trial?

During an elimination diet, your dog can only have treats made from the exact same protein as the trial food. That means using the trial food itself as treats, single-ingredient treats matching the trial protein, or novel-protein treats that match a novel-protein trial. One wrong treat can reset the whole trial.

Written by the Some Grub team

An elimination diet is simple on paper: feed one novel or hydrolysed food, and nothing else, for at least 8 weeks. In practice, "nothing else" is where most trials quietly fall apart. Not at dinner time, but in the gaps between meals - the training treat, the dental chew, the pill wrapped in cheese, the crust passed under the table.

If you have not read our full guide yet, start with how to conduct an elimination diet for dogs. This article covers the question that guide gets asked most: what can my dog actually have as a treat while we are doing this?

Why are treats the number one reason food trials fail?

An elimination diet works by removing every protein your dog has previously eaten, then watching whether their symptoms settle. The logic only holds if the trial food is genuinely the only thing going in. A single exposure to the suspect protein - even a few grams - can trigger a reaction that takes days or weeks to calm down again, muddying your results or forcing you to restart the clock.

And treats are exactly where those exposures sneak in, because they do not feel like "food":

• They happen constantly. Training rewards, recall rewards, "just because" biscuits. Most owners hand out treats many times a day without registering it.
• Other people give them. Dog walkers, groomers, family, the neighbour with a pocket full of gravy bones. Everyone who touches your dog needs to know the rules.
• Labels hide proteins. "Chicken flavour", "meat and animal derivatives", "hydrolysed poultry protein" - the suspect ingredient turns up in places you would never think to check, including things that are not obviously food at all.
• Twelve weeks is a long time. Willpower fades. A trial that starts strict in week one often gets leaky by week six.

The fix is not to white-knuckle it treat-free for three months. It is to line up treats that are genuinely safe for your dog's specific trial before you start.

What treats can dogs have on an elimination diet?

There are three options that keep a trial intact. Which one fits depends on what trial food your vet has put your dog on.

1. Use the trial food itself as treats

The safest option by a distance, because it introduces nothing new. If your dog is on a dry trial food, set aside a portion of the daily ration in a treat pouch and use individual pieces as rewards. If it is a wet or fresh trial food, you can bake teaspoon-sized blobs on parchment at a low oven temperature until firm, then use those.

• Take treats out of the measured daily ration, not on top of it, so weight stays steady.
• It is boring for the dog, honestly - but a trial is at least 8 weeks, not forever.

2. Single-ingredient treats matching the trial protein

If the trial food is built on one protein - say duck, or fish - then a treat whose ingredient list is 100% that same protein does not add anything the trial is not already testing. Think plain dried fish skins on a fish trial, or pure dried duck on a duck trial.

The rule is strict: one ingredient, and it must be the same protein as the trial food. "Duck treats" with a longer ingredient list - cereals, other animal derivatives, unnamed "flavourings" - do not qualify. Read the full composition, not the front of the pack, and check the exact product with your vet before you start.

3. Novel-protein treats matching a novel-protein trial

Many elimination diets use a novel protein - one your dog has never eaten before, so a reaction to it is extremely rare. If your vet has put your dog on a novel-protein trial, the same logic extends to treats: they need to be built on that same novel protein, with no other animal proteins hiding in the recipe.

Insect protein is one example. Black soldier fly larvae are a protein most dogs have never met, which is exactly why some vets use insect-based diets for food trials. If your dog's trial food is insect-based, insect protein treats can line up with it - the protein in the treat matches the protein in the bowl. As with everything on a trial, run the specific treat past your vet first, because they will want to check the full ingredient list against your dog's history, not just the headline protein.

What should you refuse during a food trial?

The list of things to say no to is longer than the list of things to say yes to. For the length of the trial, these are all off the table:

• Flavoured medications and supplements. Chewable wormers, flavoured joint supplements and palatable tablets are very often meat-flavoured, usually with pork or poultry derivatives. Ask your vet for unflavoured alternatives, and never wrap pills in cheese, ham or peanut butter.
• Dental chews and long-lasting chews. Most contain meat derivatives, cereals or milk proteins. Rawhide, pig ears and yak chews are all animal protein by definition.
• "Hypoallergenic" treats that do not match the trial protein. This one catches people out. Hypoallergenic is not a magic word - a hypoallergenic salmon treat is still salmon, and if your dog's trial is built on duck, that salmon treat breaks it. The treat has to match your dog's specific trial, not just carry a reassuring label.
• Other pets' food. The cat's bowl on the counter, the other dog's dinner, dropped kibble at day care. If you have a multi-pet household, feed separately and pick up bowls.
• Table scraps and human food. Crusts, licked plates, the toddler's dropped fish finger. Everyone in the house has to hold the line, including guests.
• Flavoured toys and toothpaste. Meat-flavoured dental toys and poultry-flavoured dog toothpaste both count as exposures. Check what is in the toy basket.

What should you ask your vet before the trial starts?

Ten minutes of questions before day one saves weeks of ambiguity later. Take this list to the appointment:

• Can I use the trial food itself as training treats, and should it come out of the daily ration?
• Is there a specific single-ingredient or matching-protein treat you are happy for me to use? (Bring the exact product and its full ingredient list.)
• My dog is on these medications and supplements - are any of them flavoured, and is there an unflavoured version for the trial period?
• What should I do if my dog gets hold of something off-protocol - note it and carry on, or does the clock restart?
• How long should we run the trial before the recheck, and what symptoms am I logging in the meantime?
• We use a dog walker / day care / groomer - what exactly should I tell them?

What if your dog eats the wrong thing mid-trial?

It happens, and it does not automatically mean starting from zero. Write down exactly what your dog ate, how much, and the date, then tell your vet. A one-off exposure early in the trial matters less than a slip in the final fortnight, when you are close to a readable result. What ruins trials is not the single accident - it is the accident nobody logs, so a flare-up three days later gets blamed on the trial food instead.

Frequently asked questions

Can my dog have any treats at all during an elimination diet?

Yes - but only treats made from the exact protein the trial is already testing. The trial food itself, a single-ingredient treat of the same protein, or a matching novel-protein treat. Anything else risks invalidating the trial.

Are hypoallergenic treats safe during a food trial?

Only if the protein matches the trial food. "Hypoallergenic" describes a recipe style, not a guarantee for your dog - a hypoallergenic treat built on a different protein still breaks the trial.

Can I give my dog dental chews during an elimination diet?

Almost never. Most dental chews contain meat derivatives, cereals or milk proteins that are not part of the trial. Park them for the duration and ask your vet about alternatives for dental care.

How do I give my dog tablets during a food trial?

Not wrapped in cheese, ham or peanut butter. Ask your vet whether the medication comes unflavoured, and whether you can hide it in a piece of the trial food instead.

Does one wrong treat ruin the whole elimination diet?

Not always, but it can set you back. Log exactly what was eaten and when, tell your vet, and let them decide whether to extend the trial. The unlogged slip is the one that ruins results.

If your vet has your dog on an insect-protein or other novel-protein trial, our hypoallergenic treat range is built on black soldier fly larvae - a single novel protein most dogs have never met - so it is worth showing your vet alongside the trial food. And if you want somewhere to log every meal, treat and symptom for the full 8 weeks, grab our free elimination diet tracker via the elimination diet guide.

This article is general information, not veterinary advice.