Kidney Beans Are Safe for Dogs to Eat in Moderation
Not all beans are safe for dogs to eat. Fortunately, kidney beans are one type of beans that are on the safe list as long as they are prepared correctly. A small amount of kidney beans is good for dogs to eat because they are an excellent source of plant-based protein and fiber.
Before you let your dog eat any kidney beans, it is extremely important to have the beans cooked first. Raw kidney beans do contain some toxins that are dangerous to pet. The toxin in question is hemagglutinin, which can cause problems by clumping red blood cells together. Cooking pre-soaked kidney beans will reduce the amount of toxin to below-detectable levels.
Make sure you are only letting your dog eat small amounts. Beans, in general, are known for making you feel gassy. Too many kidney beans may make your dog suffer from problems like bloat.