Food safety
Can Dogs Eat Kidney Beans? Only Fully Cooked
Yes, but only when they are fully cooked and completely plain. Raw or undercooked kidney beans contain a lectin that causes severe vomiting and diarrhea in people, and there is no reason to expect a dog to fare better. Chili, canned beans in sauce and anything with onion or garlic should stay off your dog's plate.
By Matt GarnettUpdated November 13, 20264 min read3 sources
Why raw kidney beans are the problem
Dried red kidney beans contain a natural lectin called phytohaemagglutinin. Kansas State University Research and Extension reports that raw red kidney beans carry roughly 20,000 to 70,000 hemagglutinating units of the toxin, while fully cooked beans drop to about 200 to 400. The same page says that as few as four or five improperly cooked beans can make a person ill, with severe vomiting within a few hours followed by diarrhea.
That research describes people, and I did not find a dog-specific figure from a veterinary authority. The sensible reading is to treat raw or half-cooked kidney beans as unsafe for dogs too, since the toxin works on the digestive tract of any animal that eats it. A dog that gets into a bag of dried beans is a reason to call your vet.
How to cook kidney beans properly
The preparation that Kansas State describes, drawn from FDA guidance for dry red kidney beans, has three steps: soak the beans in water for at least five hours, drain and discard the soaking water, then boil them in fresh water for at least 30 minutes. The toxin is destroyed at 212°F held for 10 minutes, but the longer boil is recommended so the beans really reach and hold that temperature.
Do not use a slow cooker for dried kidney beans. The page says a slow cooker likely will not get hot enough. If you are cooking beans for yourself and sharing a plain spoonful afterward, cook them this way and set aside your dog's portion before adding salt, onion, garlic or spice.
Canned kidney beans, chili and other risks
Canned kidney beans have already been cooked, so the raw-bean toxin is not the concern. The concern is what they are packed in, which is usually salted liquid. The ASPCA warns that excess salt can raise thirst and urination and, in larger amounts, disturb electrolytes. If you share canned beans at all, choose a no-salt version or rinse them well.
Chili is the bigger trap. Chili and bean stews usually contain onion and garlic, which the ASPCA says can irritate the gut and damage red blood cells, plus salt, spice and fatty meat. Keep chili away from dogs entirely, and call your vet if your dog ate some, noting what was in the recipe.
How to serve cooked kidney beans
Serve fully cooked, cooled, plain beans in a small spoonful mixed into your dog's usual food. Mash them for small dogs, since whole beans can be gulped. Start with a few beans on the first day and wait to see how your dog's stomach handles them; beans commonly cause gas.
Keep them to an occasional extra rather than a regular part of the diet. Dogs get their nutrition from a complete dog food, and extras should stay a small fraction of the day's meals. A lick mat or slow feeder bowl makes a small topping last longer and slows fast eaters.
Puppies, small dogs and sensitive stomachs
Puppies have small, sensitive digestive systems, and a bean-related upset hits them harder than an adult. Wait until your puppy is settled on solid food, offer no more than a bean or two, and make sure the beans are cooked until soft. Plenty of puppies do better with no beans at all.
Dogs with a history of pancreatitis, kidney disease or a sensitive stomach should only get beans if your vet agrees. If your dog eats a prescription diet, ask before adding anything from your kitchen. Beans are an extra, never a need.
Signs of trouble and when to call your vet
Call your vet or Pet Poison Helpline at (855) 764-7661 (a fee may apply) if your dog ate raw or undercooked kidney beans, or a bag of dried beans. People who eat too-few-cooked kidney beans get sick within a few hours, so watch your dog closely for repeated vomiting, diarrhea, drooling, belly pain or a hunched posture.
Go to a vet right away for repeated vomiting, a swollen or tense belly, weakness, collapse or refusal to drink. If the beans were part of a seasoned dish, also mention any onion or garlic. The ASPCA Animal Poison Control Center can be reached at (888) 426-4435.
This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.
Common questions
Are raw kidney beans poisonous to dogs?
Raw kidney beans contain a lectin that causes severe vomiting and diarrhea in people, and they should be treated as unsafe for dogs as well. Call your vet if your dog has eaten raw or undercooked beans.
Can dogs eat canned kidney beans?
Canned kidney beans are already cooked, so the raw-bean toxin is not the issue, but the liquid is usually salty. Rinse them well or choose a no-salt can, and offer only a small spoonful.
Can dogs eat chili with kidney beans?
No. Chili normally contains onion, garlic, salt, spice and fatty meat, none of which suit dogs. If your dog ate chili, contact your vet and tell them the ingredients.
How long should kidney beans be cooked for a dog?
Use the same method as for people: soak dried beans at least five hours, drain, then boil in fresh water for at least 30 minutes until soft. Do not use a slow cooker, and add no salt or seasoning.
Can dogs eat white kidney beans or cannellini?
Cooked plain cannellini beans are fine in small amounts. Kansas State notes white kidney beans carry about one third of the toxin of red ones, but they still need full cooking.
Sources we checked
This guide is general information, not veterinary advice. If your pet is unwell or injured, contact your veterinarian.
