Can Cats Eat Beans? Plain, Rarely, With Caveats

Why beans are not a natural fit

Cornell's Feline Health Center describes cats as obligate carnivores that rely on nutrients found only in animal products, with a natural diet that is high in protein, moderate in fat and minimal in carbohydrates. Beans are a plant food made up largely of starch and fiber, so they do not match what a cat's body is built to use.

That is why beans are best treated as a taste at most, not a food. A healthy adult cat that licks a plain cooked bean off the floor is not in danger, but there is no benefit to feeding more. If your cat is looking for interactive time at the table, a cat puzzle feeder gives it something better to work on.

Canned, baked and refried beans

Most beans people eat are not plain. The ASPCA lists excessively salty foods as a hazard for pets, noting that too much salt can cause increased thirst and urination and, in serious cases, vomiting, diarrhea, tremors and seizures. Canned beans are commonly packed in salted liquid, so they should be avoided or at least thoroughly drained and rinsed.

Baked beans add sugar and sauce, and refried beans and chili are often cooked with onion and garlic. The ASPCA warns that onion, garlic and chives can damage red blood cells and lead to anemia, and that cats are more susceptible than dogs. If your cat ate seasoned beans, call your vet or ASPCA Animal Poison Control at (888) 426-4435; a fee may apply.

Raw and undercooked beans

Do not offer raw or barely cooked dried beans. They are hard to digest, and a hard whole bean is a choking hazard for a small animal. Some raw beans also contain natural compounds that upset the stomach in people, and a cat's body is much smaller.

If your cat chewed on dried beans, such as from a craft project or a bean bag, or swallowed whole ones, watch for vomiting, drooling, coughing or gagging. Call your vet if any of these appear, and go straight to an emergency clinic if your cat struggles to breathe.

Green beans, coffee beans and look-alikes

The word beans covers very different foods. Plain green beans are a vegetable rather than a legume, but they still follow the same rule: plain, cooked, unsalted and tiny if your vet agrees. Soybeans in cat food are an ingredient chosen by the maker, which is a different matter from feeding your cat beans off your plate.

Coffee beans are a separate and serious danger, not a snack. Caffeine is dangerous for pets. If your cat has chewed coffee beans, call your vet or poison control right away rather than waiting to see what happens.

Calories, weight and treats

Cornell notes that treats should not exceed roughly 10 to 15 percent of a cat's daily calories, and that obesity is the most common nutritional disorder in domestic cats. A few beans add starch calories without adding any of the animal-based nutrients a cat needs.

If your cat has diabetes, kidney disease or a weight problem, ask your vet before any people food at all. Cats on a prescription diet should not get extras that could undo what the diet is doing.

If your cat begs at mealtimes, a slow feeder or a wide, shallow cat bowl for its regular food is a better answer than sharing beans.

When to call the vet

Call your vet if your cat has repeated vomiting, diarrhea that lasts more than a day, a swollen or painful belly, loss of appetite, or unusual tiredness after eating beans, particularly canned, baked or seasoned ones.

Treat any collapse, pale gums, tremors, seizures or trouble breathing as an emergency and go to the nearest emergency clinic. If you can, bring the packaging so the clinic can see what was in it.

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