Can dogs eat broccoli?

Caution — small amounts only

Small amounts of plain broccoli are fine, but it contains isothiocyanates that can cause stomach upset in larger quantities.

The full picture

Broccoli is technically safe but should be treated carefully. The florets contain compounds called isothiocyanates, which are mildly irritating to a dog's gastrointestinal tract. A small amount causes no problems, but broccoli making up more than 10% of a dog's diet can cause real issues. Stems are a choking hazard for smaller dogs. Plain steamed or raw broccoli in small amounts is the safest way to offer it. Never in cheese sauce.

If your dog has eaten broccoli

Small amounts cause stomach upset at worst. Large amounts may cause more severe irritation — contact your vet.

Risks to watch for

  • Gastrointestinal irritation from isothiocyanates
  • Choking on stems
  • Gas

Potential benefits

  • Fibre
  • Vitamin C and K
  • Antioxidants

Safe portion size

A small floret for a medium dog, occasionally.

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Safer alternatives

  • green beans
  • carrots
  • cucumber

Unexpected vet bills can run into thousands

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Related foods

Cauliflower yes Brussels sprouts caution Green beans yes Asparagus caution
Written and reviewed by
The Can My Dog Eat editorial team

Every food page is cross-checked against UK veterinary sources including the Veterinary Poisons Information Service (VPIS), the Animal PoisonLine, PDSA, and the Merck Veterinary Manual before publication. We do not accept paid placements from brands. If you spot an inaccuracy, please let us know — we take errors seriously and correct them quickly.

Spot an error? Report it

Checked against UK veterinary guidance — see our editorial standards and source list. If your dog has eaten something and you need urgent advice, call a vet or the Animal PoisonLine on 01202 509000.

Important: This page is general information, not veterinary advice. Every dog is different, and individual factors (age, breed, health conditions, medications) can change what's safe. If in doubt, always contact your vet — or the Animal PoisonLine on 01202 509000 in the UK.