Can Cats Eat Kale? Yes, But With Important Caveats

I often get asked about feeding cats “human superfoods” like kale. The short answer is yes, cats can eat kale in small amounts, but it should never be a staple. Cats are obligate carnivores – their bodies are designed to get nutrients from meat. However, a tiny piece of kale as an occasional snack is generally safe for healthy cats. Let’s dive into the details so you can make an informed choice for your feline friend.

The Potential Benefits of Kale for Cats

Kale is packed with vitamins A, C, and K, plus minerals like calcium and iron. Some of these can offer minor benefits:
– Vitamin A supports vision and immune health.
– Vitamin K aids blood clotting.
– Fiber can help with hairball control in small amounts.

But remember: cats don’t need these nutrients from plants. They get what they need from high-quality cat food. So think of kale as a novelty, not a supplement.

Risks You Need to Know

Feeding too much kale can cause problems:
– Thyroid issues: Kale contains goitrogens, which can interfere with thyroid function, especially in cats with pre-existing thyroid conditions.
– Urinary concerns: Kale is high in calcium oxalates, which can contribute to bladder stones or crystals, particularly in cats prone to urinary issues.
– Digestive upset: Too much raw kale can cause gas, diarrhea, or vomiting.
– Choking hazard: Large, tough leaves can be a choking risk. Always chop kale into tiny, bite-sized pieces.

Never feed kale if your cat has a history of kidney stones, hyperthyroidism, or digestive sensitivity. Always consult your vet before introducing any new food if your cat has health concerns.

How to Safely Serve Kale to Your Cat

If you decide to share a tiny bit of kale, follow these steps:
1. Wash thoroughly to remove pesticides.
2. Remove the stem – it’s tough and hard to digest.
3. Steam or boil the leaves to soften them. Raw kale is harder to chew and digest.
4. Chop into very small pieces (think pea-sized or smaller).
5. Serve plain – no salt, oil, garlic, onion, or seasonings. Those are toxic to cats.

Start with a piece no larger than your cat’s pinky nail. One or two tiny pieces once a week is plenty. If your cat has any negative reaction – vomiting, diarrhea, or loss of appetite – stop immediately and contact your vet.

The Bottom Line

Kale is not toxic to cats, but it offers little nutritional value for them. It’s fine as an occasional, tiny treat for a healthy cat. But there are better, cat-safe veggies like steamed carrot or green bean (also in moderation). When in doubt, stick to commercial cat treats or a small piece of cooked chicken. For any serious health concerns, always consult your veterinarian.

Remember: your cat’s main diet should be a balanced, high-protein cat food. Treats – whether kale or anything else – should make up no more than 10% of their daily calories.

Key Takeaway

Kale is safe for cats only in tiny, well-prepared amounts as an occasional treat, but it’s not nutritionally necessary – stick to a balanced cat diet.

Sources

What you need to know

Kale is not classed as toxic to cats, but it is not a good regular addition either. In larger amounts the compounds in kale and related brassicas can interfere with thyroid function and, over time, may affect red blood cells, so it is more of a “tiny nibble at most” food than a healthy green to encourage.

A small piece of plain, cooked kale on rare occasions is unlikely to trouble a healthy cat, but raw kale is tough and harder to digest. There is no nutritional reason a carnivore needs leafy greens, so the safest approach is simply to skip it. Avoid kale cooked with oil, salt, garlic or onion. If your cat regularly raids greens or shows vomiting, lethargy or a poor coat, mention the diet to your vet.