✓ Reviewed against PDSA, Blue Cross & Animal PoisonLine guidance · Last reviewed: 2026-07
Can dogs eat kale?
The full picture
Kale is another superfood that's more complicated than it seems for dogs. It contains calcium oxalate (kidney/bladder stone risk over time) and isothiocyanates (GI irritation). Some dogs also struggle with the fibrous texture. A small amount of plain cooked kale as an occasional treat is unlikely to cause problems in a healthy dog, but regular feeding isn't recommended. Dogs with kidney or bladder stone history should skip it entirely. Never fry kale in oil or serve with garlic or onion.
If your dog ate more than a safe amount
Kale in large amounts can cause GI irritation and has mild goitrogenic effects. Watch for digestive upset if eaten in large quantities.
Risks to watch for
- Oxalates — kidney/bladder stones over time
- GI irritation from isothiocyanates
- Gas
Potential benefits
- Vitamins A, C, K
- Calcium
- Antioxidants
Safe portion size
A small amount of plain cooked kale occasionally.
Safer alternatives
- Green beans
- Courgette
- Carrots
And while you're thinking about what's good for your dog, keeping on top of flea and parasite prevention is just as important as diet.