The short answer: Yes, but in moderation.
The long answer: Green beans are immature legumes that go by many names. They are also called string beans, French beans, snap beans, emotes, and haricots verts. These vegetables are known for being packed with protein, fiber, potassium, calcium, magnesium, iron, and vitamins C and B6.
Cats can enjoy green beans as snacks. With a veterinarian or cat nutritionist’s guidance, you can feed green beans to an overweight or obese cat and assist in her weight loss. However, you must avoid feeding raw or undercooked green beans as these contain lectins. Found on the outer surface of the legumes, these proteins can result in digestive complications such as nausea, vomiting, bloating, and/or diarrhea.
How to feed green beans to your cat: Plainly cooked green beans are best served to your cat. They can be cooked in boiling water for approximately 10 minutes.
Frozen and canned green beans can also be fed to your cat as long as these are not prepared with salt, onion, garlic, and other toxic ingredients. Remember to warm them before feeding them to your cat.
In summary: When cooked right, green beans can be a great addition to your cat’s diet as a meal replacement or snack. That said, the amount of green beans you give must be discussed with your veterinarian. Snacks should only make up five to 10% of your cat’s total daily calorie intake. Too much green beans may result in indigestion or flatulence.