The full answer
Veterinary and kennel-club sources describe small, occasional amounts of plain kale as acceptable for many healthy adult dogs, but not as a routine treat.
Kale contains calcium oxalate. Sources advise that dogs prone to kidney or bladder stones, or with existing kidney problems, should not be given kale. If your dog has a history of stones, ask your vet before offering any leafy greens.
Kale can also cause stomach upset, such as gas, vomiting or diarrhoea, especially in larger amounts or when a dog is not used to it.
Kale served for people is often cooked with oil, garlic, salt or seasoning, or made into kale chips. Those preparations are not plain kale.
Risks and Things to Know
- Calcium oxalate: dogs prone to kidney or bladder stones should not have kale.
- Stomach upset — gas, vomiting or diarrhoea — is possible, especially with larger amounts.
- Tough stems are harder to chew and digest.
- Seasoned kale, kale chips and dishes with garlic or onion are separate concerns.
How Much Can Dogs Eat?
If you offer kale, keep it to a small amount occasionally, not every day.
Stop if you notice stomach upset.
Ask your vet first if your dog has had kidney or bladder stones, or has a kidney problem.
Do not change a diet formulated for your dog by a veterinary nutrition professional without their advice.
How Should I Prepare It?
- Wash the leaves and remove the tough stems.
- Chop finely. Plain raw or plainly steamed kale can be used.
- Do not add oil, salt, garlic or seasoning.





