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For dogs with a sensitive stomach, plain cooked white rice is usually the better short-term base, while properly cooked potato offers more fiber and micronutrients for longer-term feeding.
That order matters. Rice is blander, lower in fiber, and easier to portion into a short bland meal. Potato can support normal stool quality once appetite returns, but only when peeled, fully cooked, and served plain.

What settles faster during an upset
Start with small, frequent meals. Offer lukewarm plain white rice with a small amount of lean, plain cooked chicken or turkey, then watch appetite, energy, and stool for 24 to 48 hours.
White rice is low-residue and low in fat when cooked without butter or seasoning. Veterinary guidance for acute diarrhea in dogs often centers on rest, hydration, and a short period of highly digestible food, as described by the Merck Veterinary Manual, with a return to a complete diet once signs ease.
Potato is also digestible when cooked, but its higher fiber and bulk can work against comfort in the first day. Save it for step two.
Call the clinic promptly for bloody stool, repeated vomiting, lethargy, abdominal pain, dehydration, or no improvement within a day or two. Short bland feeding supports comfort; it does not replace diagnosis.
The myth that more nutrients means better now
Potatoes look stronger on a nutrient panel. A plain baked potato with skin supplies more fiber, potassium, and vitamin C than an equal weight of cooked white rice, a difference owners can check in the USDA FoodData Central.
That advantage does not help during nausea or loose stool.
Use this scoring order for sensitive dogs:
- Digestive ease for 2 to 3 days: rice first
- Fiber to support normal stool form after recovery: potato may help support
- Micronutrient density in a balanced recipe: potato, when formulated to remain complete
- Prep safety margin: rice has fewer pitfalls
Vanessa in Fairfield, California, faced that sequence with Bixby, her 2-year-old neutered Miniature Schnauzer mix. After one night of loose stool but normal energy, she fed four small rice-based meals across 12 hours, then added a tablespoon of plain mashed potato on day two once stools began to firm.
Prepare each one to support normal function
Keep both plain. No butter, oil, garlic, onion, salt, gravy, cheese, or seasoned meat drippings.
For rice, cook white rice until soft. Serve lukewarm at roughly one part lean protein to two to three parts rice for a day or two, then transition back to the regular complete diet over three to five days.
For potatoes, peel, remove any green spots or sprouts, and boil or bake until fully soft. Mash with water, not milk. Avoid skins for sensitive dogs, and never feed raw potato, fries, chips, or seasoned leftovers.
Green or raw potatoes raise a separate concern. Unripe, green, and sprouted potatoes can contain solanine glycoalkaloids, which is why VCA Hospitals and other clinical sources advise dog owners to use only ripe, properly prepared potatoes and to seek care for persistent gastrointestinal signs.
Portion with weight in mind. Starchy extras should stay a small share of daily calories during recovery, with the regular complete food carrying the load after the transition. For dogs that need ongoing fiber support, ask about options such as plain pumpkin in measured amounts, as discussed in Canned Pumpkin vs. Pumpkin Powder for Dog Diarrhea: and Canned Pumpkin vs. Pumpkin Powder for Dog Digestion: What the Fiber Actually Does:
Rice earns the short-term pick.
When I would flip the pick
Choose potato first when the dog tolerates fiber well, needs more satiety during a planned bland period, or eats a formulated home-prepared recipe where potassium and fiber matter. Brown rice sits between the two: more fiber than white rice, but still less bulky than potato for many dogs.
Stay with rice when vomiting is active, stools are watery, appetite is poor, or the dog has a history of struggling with higher-fiber foods. Dogs with diabetes, kidney disease, chronic gastrointestinal disease, or food allergies need an individualized plan rather than a pantry swap.
Pair the starch choice with whole-patient support. Rest, water access, quiet exercise, and a calm feeding routine may help support quality of life and normal digestive function while the gut steadies.
A brief recap: rice to settle, potato to rebuild, plain preparation both times, and veterinary input when signs persist.
Frequently asked questions
Can dogs eat potatoes every day?
Only as part of a complete and balanced diet. Plain cooked potato can fit in small amounts, but daily feeding should be formulated to meet nutrient needs, especially for puppies or dogs with chronic conditions.
Is brown rice or white rice better for diarrhea in dogs?
Plain white rice is usually preferred for 1 to 2 days because it is lower in fiber and easier to digest. Return to the regular diet gradually, and ask your veterinarian if signs last beyond 48 hours.
Sources
- FoodData Central — USDA FoodData Central
- Diarrhea in Dogs — VCA Hospitals