Quick answer: The best dog treats for dogs with allergies contain nothing your dog reacts to. For most allergy-prone dogs, that means a single-ingredient treat made from a protein they rarely eat, such as fish. In the largest review of confirmed cases, fish caused 2% of canine food allergies, compared with 34% for beef and 15% for chicken. If your vet has started an elimination diet, use hydrolyzed treats or only treats your vet approves. No treat stops itching on its own.
Sea Bites Treats makes two of the eight treats below. We ranked them where we think they belong, and we say plainly where a competitor is the better choice.
Our picks at a glance
- 1Sea Bites Treats Bonito CubesBest overall for allergy-prone dogs
- 2Hill’s Prescription Diet Hypoallergenic TreatsBest for vet elimination trials
- 3Purina Pro Plan Veterinary Diets Gentle SnackersBest low-fat hydrolyzed treat
- 4Sea Bites Treats MackerelBest for itchy skin and coat
- 5Icelandic+ Cod Skin RollsBest long-lasting chew
- 6PureBites Ocean WhitefishEasiest freeze-dried fish to find
- 7Wholesome Pride Sweet Potato ChewsBest meat-free option
- 8Natural Balance L.I.T. Sweet Potato & FishBest crunchy biscuit for mild sensitivities
How we ranked these treats
We looked at the ingredient panel of each treat, not the claims on the front of the bag, and scored it on four things.
Ingredient count
Fewer ingredients mean fewer possible triggers and a clearer answer if your dog reacts. Here is how single-ingredient and limited-ingredient treats differ.
How rarely the protein causes allergies
Proteins dogs seldom eat, or proteins broken down by hydrolysis, are less likely to set off a reaction.
Fit for a vet elimination trial
Whether a vet would let you use it while testing your dog for a food allergy.
Everyday usefulness
Calories per piece, texture, smell, and whether it works for training or chewing.
Why the treat jar matters
Dogs usually become allergic to proteins they eat often. When veterinary dermatologists pooled the results from 297 dogs with confirmed food allergies, beef, dairy and chicken topped the list. Fish was among the least common.
Most common food allergens in dogs
Share of 297 dogs with a confirmed food allergy that reacted to each food. Some dogs reacted to more than one. Source: Mueller, Olivry and Prélaud, BMC Veterinary Research, 2016.
Two things follow from this. A grain-free treat does nothing for a dog allergic to chicken if it still contains chicken, and one chicken-flavored chew can undo weeks of careful feeding. Fish is not allergy-proof, either. It is simply less likely to be the problem for most dogs.
Comparison table
| # | Treat | Type | Ingredients | Protein | OK for a vet food trial? | Best for |
|---|---|---|---|---|---|---|
| 1 | Sea Bites Treats Bonito CubesOurs | Freeze-dried fish | 1 | Bonito | Only if fish is the trial protein | Everyday treats and training |
| 2 | Hill’s Prescription Diet Hypoallergenic Treats | Hydrolyzed biscuit | About 10 | Hydrolyzed chicken liver | Yes, with your vet’s OK | Elimination trials |
| 3 | Purina Pro Plan Veterinary Diets Gentle Snackers | Hydrolyzed biscuit | 10+ | Hydrolyzed soy | Yes, with your vet’s OK | Trials, low-fat diets |
| 4 | Sea Bites Treats MackerelOurs | Freeze-dried fish | 1 | Atlantic mackerel | Only if fish is the trial protein | Itchy skin, dull coat |
| 5 | Icelandic+ Cod Skin Rolls | Air-dried chew | 1 | Cod | Only if fish is the trial protein | Dogs that need to chew |
| 6 | PureBites Ocean Whitefish | Freeze-dried fish | 1 | Whitefish (species varies) | Ask your vet: species varies | A fish treat you can buy today |
| 7 | Wholesome Pride Sweet Potato Chews | Dehydrated vegetable | 1 | None | Only if your vet approves it | Dogs reacting to many proteins |
| 8 | Natural Balance L.I.T. Sweet Potato & Fish | Grain-free biscuit | 12 | Salmon, fish meal | No: too many ingredients | Mild sensitivities |
The 8 best dog treats for dogs with allergies, ranked
1Best overall for allergy-prone dogs
Sea Bites Treats Bonito Cubes
Ingredients: Wild-caught bonito
- 1 ingredient
- Fish protein
- About 3 kcal per cube
- Freeze-dried in the USA
Why we picked it: One named fish species and nothing else, so there is nothing hidden to react to. Bonito is a protein most dogs have never eaten, and each 1 g cube is about 3 calories, so you can use plenty of them in a training session without overfeeding. It is the treat we would hand to most dogs with a suspected chicken or beef allergy.
Watch out for: Not for dogs with a fish allergy, and not for a vet elimination trial unless fish is the trial protein and your vet agrees. It has a strong ocean smell, and it costs more per ounce than a biscuit. Want something even leaner? Our tuna treats are 3% fat.
Hydrolyzed biscuit
2Best for vet elimination trials
Hill’s Prescription Diet Hypoallergenic Treats
Ingredients: A starch-based biscuit made with hydrolyzed chicken liver protein, plus vegetable oil, fat, vitamins and minerals. Recipes vary by country.
- Hydrolyzed protein
- Added omega-3 and omega-6
- Made to pair with Hill’s allergy diets
Why we picked it: The protein is broken into fragments small enough (under 3,000 daltons, according to Hill’s) that the immune system usually does not recognize it. Hill’s designs these treats to be fed alongside its prescription allergy diets, which makes them the safest pick when your vet is running an elimination trial.
Watch out for: Starch is the main ingredient, so they are less exciting than meat or fish for training. The protein comes from chicken, which is fine for most allergic dogs once hydrolyzed, but ask your vet if your dog’s chicken allergy is severe.
Where to buy: usually through your vet.
Low-fat hydrolyzed biscuit
3Best low-fat hydrolyzed treat
Purina Pro Plan Veterinary Diets Gentle Snackers
Ingredients: Corn starch, hydrolyzed soy protein isolate, natural flavor, powdered cellulose, vegetable oils and minerals
- Hydrolyzed soy
- Low fat
- About 3.6 kcal per piece
Why we picked it: Based on Purina’s HA Hydrolyzed diet, these treats have a single hydrolyzed protein and little fat, so they also suit dogs on a weight-loss plan or with a sensitive stomach. Purina’s own vet store sells them without needing vet approval.
Watch out for: Corn starch comes first and the label includes natural flavor. They are crunchy and fairly plain, so some dogs are less motivated by them.
Where to buy: vet clinics and major online pet retailers.
4Best for itchy skin and coat
Sea Bites Treats Mackerel
Ingredients: Wild-caught mackerel
- 1 ingredient
- 6.5 g omega-3 per 100 g
- About 11 kcal per piece
Why we picked it: Atlantic mackerel is an oily fish, and freeze-drying concentrates its EPA and DHA, the omega-3s that support the skin barrier. It is the pick for dogs with dry, itchy skin or a dull coat, as long as fish agrees with them.
Watch out for: At 20% fat it is the richest treat on this list, so skip it for dogs on a low-fat diet or with a history of pancreatitis. Omega-3 support takes six to eight weeks to show in the coat and does not cure allergies. At about 11 calories a piece, give fewer than you would of bonito.
Air-dried fish skin chew
5Best long-lasting chew
Icelandic+ Cod Skin Rolls
Ingredients: Icelandic cod skin
- 1 ingredient
- Air-dried
- Long-lasting
Why we picked it: A single-ingredient chew for dogs that need something to work on, which most allergy-friendly treats are not. Cod skin is a fish protein and a natural source of omega fatty acids.
Watch out for: Supervise chewing and choose a size that suits your dog. Stick to the single-fish products: the brand’s combo bites mix two seafood ingredients, which defeats the purpose during a food trial. Strong smell.
Where to buy: pet stores and online pet retailers.
Freeze-dried whitefish
6Easiest freeze-dried fish to find
PureBites Ocean Whitefish
Ingredients: Wild-caught ocean whitefish
- 1 ingredient
- Freeze-dried in the USA
- About 5 kcal per treat
Why we picked it: One ingredient, freeze-dried, and stocked by most big pet retailers, so it is easy to find when you need a fish treat today.
Watch out for: The whitefish can be pollock, hake or perch depending on what is in season, so you do not always know the exact species, which matters in a strict elimination trial. Some owners find it crumbles in a treat pouch.
Where to buy: most large pet stores and online pet retailers.
Dehydrated sweet potato
7Best meat-free option
Wholesome Pride Sweet Potato Chews
Ingredients: Sweet potato
- 1 ingredient
- Plant-based
- Chewy texture
Why we picked it: For dogs that seem to react to several animal proteins, a single vegetable treat takes animal protein out of the treat jar altogether. Many dogs take their time over the chewy slices.
Watch out for: It is low in protein, so it is a snack rather than a high-value training reward. Because it is minimally processed, size and hardness vary from bag to bag, and some pieces are very hard. Check with your vet before using it during a food trial.
Where to buy: pet stores and online pet retailers.
Grain-free biscuit
8Best crunchy biscuit for mild sensitivities
Natural Balance L.I.T. Sweet Potato & Fish
Ingredients (as listed by retailers): Potatoes, sweet potato, potato protein, cane molasses, canola oil, salmon, fish meal, calcium carbonate, salt, natural flavor, mixed tocopherols, rosemary extract
- 12 ingredients
- Grain-free
- Fish as the animal protein
Why we picked it: A widely available grain-free biscuit with fish as its only animal protein. It suits dogs that simply need to avoid chicken, beef and grain from day to day.
Watch out for: Twelve ingredients, including salt, cane molasses, natural flavor and two fish sources, so it is not suitable for an elimination trial or for working out what your dog reacts to. Check the current bag, because recipes change.
Where to buy: pet stores and online pet retailers.
Best dog treats for allergies and itching
Itching is the most common sign of allergy in dogs, but food is not the most common cause. Fleas and environmental allergies to pollen, dust mites and grasses account for more itchy dogs than food does. That shapes what a treat can and cannot do.
It can avoid adding a trigger
If food is part of the problem, the treat jar is where chicken, beef and dairy most often slip back in.
It can support the skin
Omega-3 fatty acids (EPA and DHA) support the skin barrier. Expect six to eight weeks before you see a change in the coat.
It cannot treat the cause
Fleas, environmental allergies and skin infections need your vet. A treat will not fix them.
For itchy dogs, our three picks from the list above are Sea Bites mackerel for the most omega-3, Icelandic+ cod skin for omega fatty acids in a chew, and Hill’s Hypoallergenic Treats, with added omega-3 and omega-6, for dogs on a vet trial. For gentle ways to calm the scratching at home, see what you can give your dog for itchy skin naturally.
See your vet if you notice any of these:
- Itching that keeps your dog awake or makes them chew their skin raw
- Open sores, crusts, pus or a bad smell
- Bald patches that are spreading
- Itching that continues after every pet in the home is on flea prevention
Our guide to why your dog is itching and losing hair covers the 8 most common causes.
Which treat fits your dog?
My vet has started an elimination diet
Use only what your vet approves: a hydrolyzed treat such as #2 or #3, or pieces of the trial food itself.
I think my dog reacts to chicken or beef
A single-ingredient fish treat such as bonito, tuna or whitefish.
My dog reacts to lots of proteins
A vegetable treat like sweet potato or a hydrolyzed treat, chosen with your vet.
How to choose a treat for a dog with allergies
- List everything your dog eats. Include chews, dental sticks and flavored medicines. You need to know which proteins your dog has already met.
- Ask your vet before giving treats during a food trial. Treats must match the trial diet, so a handful of the trial kibble often works best.
- Pick a protein your dog rarely eats, or a hydrolyzed treat. For most dogs fed chicken or beef food, fish is an easy switch.
- Read the ingredient panel, not the front of the bag. Look for one named species and no “natural flavor,” “meat” or “animal fat.” Our guide on how to read a dog treat label shows what to look for.
- Introduce one new treat at a time. Watch the skin, ears and stools for a couple of weeks before adding another, and keep all treats under 10% of daily calories.
Start with one fish
Each Sea Bites treat is one wild-caught fish, freeze-dried in the USA, with nothing else on the label.
Training every day? Our 24 oz professional bags cost less per ounce.
This article is for general information and is not a substitute for advice from your veterinarian.
Frequently asked questions
What are the best dog treats for dogs with allergies?
The best treats are ones your dog cannot react to. For most allergy-prone dogs, that is a single-ingredient treat made from a protein they rarely eat, such as freeze-dried fish. For dogs on a vet elimination trial, hydrolyzed treats like Hill’s Hypoallergenic Treats or Purina Gentle Snackers are the safest choice.
What are the best dog treats for allergies and itching?
Look for single-ingredient treats in a protein your dog tolerates, ideally one rich in omega-3 fatty acids such as mackerel or cod skin. Omega-3s support the skin barrier, but changes take six to eight weeks and no treat cures itching. Fleas and environmental allergies cause more itching than food, so see your vet if it continues.
What treats can I give my dog during an elimination diet?
Only treats your vet approves. Usually that means hydrolyzed treats made for elimination diets, or pieces of the trial food itself. A single-ingredient treat can work only if its protein matches the trial diet. A strict trial normally lasts at least 8 weeks, because that is when more than 90% of food-allergic dogs improve.
Is fish good for dogs with allergies?
For many dogs, yes. Fish caused only about 2% of confirmed food allergies in dogs in the largest review of cases, far behind beef, dairy and chicken. It is not allergy-proof, so avoid it if your dog has reacted to fish before.
What does hypoallergenic mean on a dog treat?
There is no legal definition. On veterinary treats it usually means the protein has been hydrolyzed, broken into pieces too small for the immune system to recognize. On other treats it often just means the treat leaves out common allergens, which is not the same thing.
Are grain-free treats better for dogs with allergies?
Not necessarily. Wheat is a known allergen, but beef, dairy and chicken cause more food allergies in dogs. A grain-free treat that still contains chicken will not help a chicken-allergic dog.
Can dog treats stop itching fast?
No. A treat can avoid adding a trigger and, if it is rich in omega-3, support the skin over several weeks. Fast relief from itching comes from treating the cause with your vet, whether that is fleas, an infection or an allergy.
Are sweet potato treats good for dogs with allergies?
They can be useful for dogs that react to several animal proteins, because they contain no animal protein at all. They are low in protein, vary in hardness, and are best introduced slowly. Ask your vet before using them during a food trial.
How many treats can a dog with allergies have?
Keep all treats under 10% of daily calories and reduce meals to match. For our bonito cubes at about 3 calories each, that is roughly 11 cubes a day for a 5 kg (11 lb) dog. Add one new treat at a time so you can tell what causes any reaction.
Sources
- Mueller RS, Olivry T, Prélaud P. Common food allergen sources in dogs and cats. BMC Veterinary Research, 2016.
- Olivry T, Mueller RS, Prélaud P. Duration of elimination diets. BMC Veterinary Research, 2015.
- Veterinary Partner. Food allergy in dogs and cats.
- Product details from manufacturer and retailer listings, October 2026.