Homemade Probiotics for Dogs: What Works + 6 Safe Recipes

A spoonful of plain, unsweetened yogurt or kefir is a fine treat for most dogs, and it usually carries live cultures. It is not the same thing as a tested probiotic, though. The benefits researchers have measured in dogs belong to specific strains in specific products, and a homemade treat can't promise any of them.

So make the recipes below because they are safe, simple and your dog will love them. If your dog has a gut problem that needs fixing, that is a job for your veterinarian and, often, a veterinary probiotic.

Probiotics for Dogs: What Homemade Can and Can't Do

Probiotics for dogs are live microorganisms that, given in adequate amounts, give the animal a health benefit. That is the scientific definition used by the International Scientific Association for Probiotics and Prebiotics (ISAPP), and the last part matters most: a microbe only earns the name once a benefit has been shown.

That is why ISAPP says fermented foods are generally not sources of probiotics. Yogurt, kefir and sauerkraut are made by microbes, and many still carry live cultures when you eat them. But the microbes in them are not usually identified down to the strain, their numbers are not known, and fermented foods have no requirement to improve health at all.

Benefits are strain by strain

Cornell University's Riney Canine Health Center lists probiotic strains with a specific job in dogs, for example Bifidobacterium animalis strain AHC7 for acute diarrhea and Bifidobacterium longum BL999 for anxiety-related behavior. Enterococcus faecium SF68 is another strain used in veterinary products. Notice the strain codes. A study on one strain tells you nothing certain about another, even within the same species, and nothing about the cultures in a tub of grocery-store yogurt.

If you want one of those tested strains working for your dog, ask your vet for a veterinary probiotic rather than hoping the yogurt aisle has it.

What the evidence for diarrhea actually shows

Even tested products are no sure fix:

• A 2024 systematic review for the European ENOVAT antimicrobial guidelines pooled six randomized trials and found that probiotic, prebiotic and synbiotic products did not clearly shorten acute diarrhea in dogs. The certainty of that evidence ranged from very low to moderate, and no side effects were reported.
• In a 2019 trial of 60 dogs with acute diarrhea, stools returned to normal after about 3.5 days on a multi-strain probiotic versus 4.8 days on placebo. The difference was not statistically significant, and the authors said a bigger study is needed.
• In 773 dogs entering a UK shelter, a probiotic-prebiotic supplement lowered the number of dogs that developed diarrhea. That is a real result for that product in that setting (the lead author worked for a probiotic company).

Put together: some veterinary probiotics help some dogs in some situations. We found no study showing the same for homemade yogurt treats in dogs.

Homemade treat vs tested probiotic

Labels deserve a skeptical eye too. When researchers counted the bacteria in 15 veterinary probiotics that promised a specific number, only 4 met their claim. A 2020 study of six kefir products sold for dogs and cats found that every product with a guaranteed count overstated it and none named its bacteria correctly.

Before You Start: Safety Rules for Probiotic Foods

Probiotic recipes go wrong through the ingredients, not the cultures. Follow these rules for every recipe below.

• Plain and unsweetened only. Flavored, "light" and sugar-free yogurts can contain xylitol, which causes dangerously low blood sugar and possible liver damage in dogs. Some peanut butters contain it too, so read the label every time.
• Go easy on dairy. Dogs make little lactase, the enzyme that digests milk sugar, so dairy can cause diarrhea or an upset stomach. Plain Greek yogurt has less lactose than regular yogurt. If your dog gets gassy or loose after dairy, skip it.
• Start small. Offer a fraction of the serving for the first few days and watch the poop before building up.
• Count it as a treat. The World Small Animal Veterinary Association (WSAVA) says treats, including supplements and home-prepared people food, should stay under 10% of a dog's daily calories. For a 22 lb (10 kg) adult dog that is about 47 calories a day. One tablespoon of peanut butter is about 81 calories, so a little goes a long way.
• Ask first for some dogs. Check with your vet before starting probiotic foods or supplements for a puppy, a dog with ongoing stomach or intestinal problems, a dog on a prescription diet, or a dog with a weak immune system. Cornell advises that severely immunocompromised dogs get probiotics only under veterinary supervision.

Leave these out of any homemade "probiotic"

• Xylitol and other artificial sweeteners, in yogurt, kefir or peanut butter.
• Onion, garlic, leeks and chives. They damage red blood cells. Most kimchi and many store-bought sauerkrauts contain garlic or onion.
• Salty ferments. Sauerkraut and kimchi are made with salt, and too much salt causes thirst and electrolyte problems.
• Grapes, raisins and currants. They can cause kidney damage.
• Raw yeast dough. It keeps rising and builds gas in the stomach.
• Chocolate and macadamia nuts.
• Coconut oil as a recipe base. Small amounts of coconut are unlikely to cause serious harm, but its oils can cause stomach upset, loose stools and diarrhea.

How to Make Homemade Probiotics for Dogs: 6 Safe Recipes

These recipes use plain yogurt or kefir for live cultures and dog-safe fruit and vegetables for fiber. Pumpkin, banana and oats are prebiotics, not probiotics: their fiber feeds the bacteria already living in your dog's gut. Plenty of other frozen pumpkin treats work the same way.

One caveat: nobody has measured how many yogurt cultures survive a home freezer, and baking kills them. Each recipe below is labeled for what it really is.

1. The Simplest: A Spoonful of Plain Yogurt or Kefir

What it is: live cultures, no prep. Time: 1 minute.

Spoon plain, unsweetened yogurt (Greek is lower in lactose) onto your dog's regular food. PetMD, in a veterinarian-written guide, gives these as the most yogurt to offer in a day, and it still has to fit within the 10% treat budget:

Start well below these amounts and build up over a few days. PetMD's guide covers yogurt only; if you use plain kefir instead, keep it unsweetened and just as small.

2. Frozen Pumpkin-Banana Yogurt Bites

What it is: live cultures plus prebiotic fiber. Prep: 10 minutes, plus freezing.

Ingredients

• 1 cup plain, unsweetened yogurt with live cultures
• 1/2 cup pure pumpkin puree (not pumpkin pie filling, which is sweetened and spiced)
• 1 small ripe banana, mashed

Directions

1. Mix the yogurt, pumpkin and banana in a bowl until smooth.
2. Spoon into a silicone mold or ice cube tray. Smaller molds make it easier to stay inside the treat budget.
3. Freeze for several hours, until solid.
4. Pop out one bite as a treat.

3. Kefir, Apple and Oat Cups

What it is: live cultures plus fiber. Prep: 10 minutes, plus freezing.

Ingredients

• 1 cup plain, unsweetened kefir
• 2 tablespoons natural peanut butter (check the label: no xylitol)
• 1/4 cup rolled oats
• 1 small apple, peeled, cored and seeds removed

Directions

1. Puree the apple in a blender or food processor.
2. Stir the kefir, peanut butter, apple puree and oats together.
3. Spoon into a mini muffin tin or small silicone molds and freeze until solid.
4. Serve one cup as a treat. The peanut butter stays at 2 tablespoons for the whole batch because it is calorie-dense.

4. Blueberry-Banana Pupsicles

What it is: live cultures plus fruit. Prep: 10 minutes, plus freezing.

Ingredients

• 1 cup plain, unsweetened yogurt with live cultures
• 1/2 cup fresh or frozen blueberries
• 1 ripe banana
• A splash of water if needed for blending

Directions

1. Blend the blueberries and banana until smooth, adding a little water if the blender sticks.
2. Stir the fruit into the yogurt.
3. Pour into small silicone molds or paper cups and freeze until set.
4. Serve one small pupsicle. Bananas are a treat food, so keep these occasional.

5. Kefir Pumpkin Paws

What it is: live cultures plus prebiotic fiber. Prep: 10 minutes, plus freezing.

Ingredients

• 1 cup plain, unsweetened kefir
• 1 cup pure pumpkin puree

Directions

1. Mix the kefir and pumpkin until smooth.
2. Spoon into paw-shaped silicone molds or an ice cube tray.
3. Freeze until solid, usually several hours.
4. Serve one paw as a treat.

That's the whole recipe. No honey, no cinnamon: your dog doesn't need either.

6. Banana-Carrot Yogurt Biscuits (Baked, No Live Cultures)

What it is: a fiber treat, not a probiotic. Baking kills the cultures. Prep: 10 minutes. Bake: about 25 minutes.

Ingredients

• 1 large ripe banana
• 1 medium carrot, finely grated
• 1 cup plain, unsweetened yogurt
• 2 cups whole wheat flour
• Up to 1/4 cup water, as needed

Directions

1. Heat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Blend the banana and yogurt until smooth, then stir in the carrot.
3. Add the flour gradually, with a little water if the dough is too dry.
4. Drop small spoonfuls onto the sheet.
5. Bake for about 25 minutes, until golden and firm, then cool completely before serving.

Skip this one if your dog has a wheat allergy.

Why the old list had seven recipes and this one has six

We dropped two. The homemade sauerkraut used two tablespoons of salt and a 24-hour countertop ferment with no way to check what grew in the jar. The coconut bites were built on half a cup of coconut oil, which can upset a dog's stomach and has no shown probiotic benefit. The simple yogurt spoonful took a slot because it is the safest place to start.

Check with your vet before adding new foods if your dog has a health condition. These treats sit on top of a complete and balanced diet; they never stand in for a meal.

How to Store Homemade Probiotic Treats

• Keep frozen treats in an airtight container in the freezer and serve them straight from it.
• Keep baked biscuits in an airtight container in the fridge and use them up quickly.
• Don't leave yogurt or kefir treats sitting out at room temperature.
• Throw out anything with mold, a sour-off smell or a slimy texture.

What Is a Microbiome?

A microbiome is the community of microbes living in one place, such as your dog's gut: bacteria, fungi, viruses and other organisms. In the gut they help digest food and interact with the immune system. Cornell's Riney Canine Health Center notes that the gastrointestinal tract holds about 70% of a dog's immune system.

Two terms get mixed up a lot:

• Probiotics are live beneficial microbes added to the gut.
• Prebiotics are fibers that feed the beneficial microbes already there. Pumpkin, sweet potato, oats and bananas belong here.

WSAVA's reminder applies to every recipe here: treats should never replace a meal, because every dog needs a complete and balanced diet.

When It's Not a Probiotic Problem: Call Your Vet

Soft stool after a new treat is common. These signs are not a job for yogurt:

Call now

• Blood in the stool, or black, tarry stool
• Vomiting together with diarrhea
• Weakness, lethargy, or refusing food
• Severe diarrhea, or a dog who seems generally unwell (fever, belly pain, signs of dehydration)
• Your dog ate something with xylitol (call your vet, an emergency clinic or ASPCA Animal Poison Control at (888) 426-4435 right away, even before any signs)

Call today

• A puppy with diarrhea, especially one who hasn't finished their vaccinations. Even mild diarrhea dehydrates a puppy, and parvovirus needs a vet right away.
• Loose stool lasting more than two days

See your vet soon

• Diarrhea that keeps coming back
• You want to start probiotic foods for a puppy, a senior, or a dog with a health condition

Mention at your next visit

• Mild gas or an occasional soft stool that settles on its own
• You're curious whether a probiotic supplement would help your dog

Not sure what you're looking at? Our dog poop color chart explains what different colors and textures can mean.

What About Probiotic Supplements?

When a dog needs gut support, veterinarians reach for veterinary probiotics: products with named strains and studies behind them. Your vet may send one home after a bout of diarrhea, and they choose the product and how much to give based on your dog and the problem.

If you shop for one yourself, Cornell suggests the label should show the exact species, the number of live organisms, an expiry date and a guarantee of live organisms, and that the maker should be able to point to a study of the product. Given how often labels miss their claims, ask your vet which veterinary probiotic they trust.

FAQ

How much yogurt can I give my dog?

A little. PetMD's maximums run from 1/2 teaspoon a day for dogs under 10 lb to 3 tablespoons for dogs over 90 lb. Start below that, use plain unsweetened yogurt only, and keep all treats under 10% of daily calories.

Can I give my dog human probiotics?

Ask your vet before you do. Human products are formulated and labeled for people, and veterinary products are where the dog studies are. Your vet can recommend a product and the right amount.

How fast do probiotics work for diarrhea?

There is no reliable timeline. In the best trials in dogs with acute diarrhea, probiotic products did not clearly shorten it. If loose stool lasts more than two days, or you see blood, vomiting or weakness, call your vet instead of waiting.

Are homemade probiotics safe for puppies?

Check with your vet first. Puppies have small treat budgets and sensitive stomachs. And if your puppy has diarrhea, skip the kitchen and call your vet the same day.

Originally written by Natasha Boycheva. Updated by the I Love Veterinary editorial team.

Sources

• ISAPP: Do fermented foods contain probiotics?
• Cornell Riney Canine Health Center: The power of probiotics
• Cornell Riney Canine Health Center: Diarrhea
• Scahill et al., Veterinary Journal 2024: Antimicrobial and nutraceutical treatment for canine acute diarrhoea (ENOVAT systematic review)
• Shmalberg et al., Frontiers in Veterinary Science 2019: Probiotic or metronidazole for acute canine diarrhea
• Rose et al., Journal of Veterinary Internal Medicine 2017: Probiotic-prebiotic supplement and diarrhea in a dog shelter
• Weese and Martin, Canadian Veterinary Journal 2011: Commercial probiotic contents and label accuracy
• Metras et al., Journal of Animal Science 2020: Label accuracy of companion animal kefir products
• VCA Animal Hospitals: Diarrhea in Dogs
• AKC: Puppy diarrhea: causes, treatment, and symptoms
• WSAVA: Feeding treats to your dog
• ASPCA Animal Poison Control: People foods to avoid feeding your pets
• FDA: Paws off xylitol, it's dangerous for dogs
• PetMD: Can dogs eat yogurt?
• AKC: Fruits and vegetables dogs can or can't eat

This article is for general information and is not a substitute for advice from your veterinarian.