Can Dogs Eat Broccoli? Raw, Cooked and How Much

By Marc Brannigan, Co-Founder & CEO

Yes — broccoli is safe for dogs in small amounts, and it is one of the better vegetables to share. The two things to get right are the quantity and the stalk. Broccoli florets contain compounds called isothiocyanates that irritate a dog's gut in larger amounts, and the thick stalk is a recognised choking hazard.

Is broccoli good for dogs?

Fibre and very low calorie

About 2.4 grams of fibre per cup and only around 31 calories. For a dog on a weight-management plan, broccoli is one of the most filling things you can add for almost no calorie cost.

Vitamin K and vitamin C

Broccoli is genuinely high in vitamin K, which is involved in blood clotting and bone metabolism, and high in vitamin C — though as with other produce, healthy dogs make their own vitamin C.

Sulforaphane

Broccoli is the best-known dietary source of sulforaphane, a compound studied extensively for its effects on cellular antioxidant pathways. The research is overwhelmingly human and laboratory-based; there is very little canine work. Interesting, not a reason to feed it.

Calcium and folate

Present in useful amounts, though a complete diet covers both.

Why isothiocyanates set the limit

Broccoli florets contain isothiocyanates — the compounds responsible for the slightly bitter, sulphurous taste in brassicas. In people they are considered beneficial. In dogs they irritate the gastric lining, and in sufficient quantity cause gas, bloating, abdominal discomfort and vomiting.

This is a dose effect, not a toxicity. A few florets will do nothing. A dog who eats a whole head of broccoli will be uncomfortable and extremely gassy, and in a small dog that can tip into genuine distress. It is the reason broccoli has a ceiling where cucumber does not.

How much broccoli can a dog eat?

Dog size	Approximate weight	Broccoli per day
Toy	Under 10 lbs	1 small floret piece
Small	10 to 20 lbs	1 small floret
Medium	20 to 50 lbs	2 to 3 small florets
Large	50 to 90 lbs	3 to 4 florets
Giant	Over 90 lbs	A small handful of florets

Introduce it gradually. Brassicas are the classic gas-producing vegetable family and a dog meeting broccoli for the first time in quantity will let everyone know about it.

Raw or cooked?

Both are safe, and they trade off against each other.

• Raw keeps the most vitamin C and gives a satisfying crunch, but it is harder to chew and more likely to cause gas.
• Steamed or boiled, plain is softer, easier to digest and gentler on the gut — the better option for small dogs, seniors and any dog with a delicate stomach. Some vitamin C is lost, which barely matters for a dog.
• Never with seasoning. No butter, salt, oil, cheese sauce, and above all no onion or garlic, which damage canine red blood cells. Most cooked broccoli in a human kitchen has at least one of those on it.
• Not fried, not in batter, not in a casserole.

How to serve broccoli

• Wash it well. Broccoli heads trap soil and are commonly sprayed.
• Cut the florets off the main stalk and keep the stalk aside to deal with separately.
• Chop florets into bite-sized pieces — small for anything under 20 lbs.
• Steam for a few minutes if your dog has a sensitive stomach, is small, or is elderly.
• Serve plain and cooled. Nothing on it.
• Mix a little into their food rather than feeding it alone if you are using broccoli to bulk out a weight-management diet — the American Kennel Club takes the same line on portioning brassicas for dogs.

The stalk is the choking risk

Broccoli stalks are thick, dense and fibrous, and they are a well-recognised obstruction hazard — particularly for small dogs and for dogs who swallow without chewing. If you want to use the stalk, peel the woody outside off and chop it into small pieces, or steam it until soft. Never hand a dog a whole stalk to gnaw on.

If your dog has swallowed a large piece of stalk, watch for 48 hours. Repeated vomiting, straining without producing stool, refusing food or a tense abdomen all warrant a call to your vet, and sooner with a small dog.

Which dogs should be careful

• Dogs with sensitive stomachs or a tendency to gas. Steam it, keep portions at the low end, or skip it for green beans instead.
• Dogs on blood-thinning medication. Broccoli is high in vitamin K, which is directly involved in clotting. This is a genuine interaction worth raising with your vet.
• Dogs with thyroid disease. Brassicas contain goitrogens, which in large and sustained amounts can interfere with thyroid function. Occasional florets are not a concern, but a dog with diagnosed thyroid disease should have this cleared with their vet.
• Dogs with a history of bloat. A gas-producing vegetable is a poor choice for deep-chested breeds with that history.
• Puppies. Small amounts of steamed broccoli from around 12 weeks, sparingly.

Everyday wellness, beyond the vegetable drawer

Broccoli is a sound low-calorie addition and a cheap way to bulk out a weight-management diet. What it will not do is any of the things people hope a vegetable might — it is food, not support for a specific need.

Our organic hemp dog treats are made in Colorado with organic ingredients and full-spectrum hemp extract, in a small-dog and a large-dog size. For dogs who prefer an oil to a biscuit, the hemp seed oil range covers the same ground, and the serving guide gives amounts by weight.

Frequently asked questions

The bottom line

Broccoli is a genuinely useful low-calorie, high-fibre addition for dogs — best steamed plain, served as a few small florets, and kept under 10% of the day's food. Chop or soften the stalk before it goes anywhere near a dog, never serve it cooked with onion, garlic, butter or salt, and check with your vet first if your dog is on blood thinners or has thyroid disease.