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 ate more than a safe amount

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.

Safer alternatives

  • green beans
  • carrots
  • cucumber

Related foods

Cauliflower yes Brussels sprouts caution Green beans yes Asparagus caution
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.