Can Dogs Eat Oatmeal? Yes, Plain and Cooked in Water

Why plain oatmeal is fine for dogs

Oats are a whole grain that many dogs digest well, and they appear as an ingredient in plenty of commercial dog foods. The AKC says dogs can eat oatmeal in small amounts with a few precautions, noting it provides fiber and other nutrients while being fairly rich in carbohydrates and calories.

Oatmeal is not a cure for anything and does not replace a complete dog food. Think of it as an occasional warm topper or a bland extra. Plain rolled oats or steel-cut oats are the best choices; quick oats are fine if they have nothing added.

Oatmeal to avoid

The AKC is blunt about flavored oatmeal: never feed it. Instant flavored packets often carry a lot of sugar, artificial flavors and sometimes xylitol, which can cause a dangerous drop in blood sugar in dogs. Highly processed instant oatmeal also loses much of its value, so plain oats are a better buy.

Raisins, a classic oatmeal topping, are toxic to dogs, as is chocolate. Oatmeal raisin cookies combine both risks with sugar and butter. If your dog ate oatmeal with raisins, chocolate or xylitol, call your vet, ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 right away; a fee may apply.

How to make oatmeal for your dog

Cook plain oats in water, not milk, since many dogs digest dairy poorly. Use no salt, butter, sugar, maple syrup or cinnamon blends. Cook the oats all the way through; raw oats sprinkled dry over food are harder for dogs to digest and can swell in the stomach.

Let the oatmeal cool to lukewarm before serving, because hot porridge holds heat and can scald a dog's mouth. Stir a spoonful into your dog's regular food or mix it with a few plain blueberries or a spoonful of plain canned pumpkin for variety.

How much oatmeal by dog weight

A common guideline the AKC cites is about one tablespoon of cooked oatmeal for every 20 lb of body weight. In practice, a dog under 20 lb can have about a tablespoon, a dog of 20 to 50 lb two to two and a half tablespoons, and a dog over 50 lb up to a quarter cup, with most large dogs topping out around half a cup.

Offer it once or twice a week rather than every day, and reduce the main meal slightly to keep calories steady. Too much at once can cause gas, diarrhea or vomiting, and in deep-chested breeds a large bowl of anything that swells is best avoided.

Spreading a few safe pieces across a snuffle mat or packing them into a puzzle toy turns a small treat into a few minutes of sniffing work.

Puppies and oatmeal

Puppies can have a small spoonful of plain cooked oatmeal once they are fully weaned, introduced gradually. Their nutrition needs are precise during growth, so oatmeal should stay a small extra and never replace a complete puppy food.

Make it thin and cooled, offer a teaspoon or two the first time, and watch for loose stool. If your puppy is on a special diet for a sensitive stomach or allergies, check with your vet before adding grains.

Signs oatmeal disagreed with your dog

Too much oatmeal usually causes gas, loose stool or vomiting within a few hours to a day, and settles once you stop. Dogs with a grain sensitivity may show itchy skin or ear problems over weeks of regular feeding, which is worth raising with your vet.

Call your vet the same day for repeated vomiting, bloody diarrhea, refusal to eat, or a swollen, tight belly with unproductive retching, which needs an emergency clinic now. Any exposure to raisins, chocolate or xylitol in a bowl of oatmeal is also a reason to call straight away.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.