Can hamsters eat cauliflower?

Yes — safe in normal portions

Yes. Cauliflower florets and stalk are safe for hamsters in small amounts. Like broccoli, too much can cause gas.

Portion: A piece about 1–1.5 cm (⅜–⅝ in) across for a Syrian; about half that for a dwarf. Keep all fresh food together to about 1–2 teaspoons a day for a Syrian and about half that for a dwarf.
How often: A few times a week, rotated with other vegetables.
Sugar: 1.9 g / 100 g

How to serve it

Wash well
Remove the leaves and cut a small floret or piece of stalk
Serve raw, or lightly cooked with nothing added and cooled
Remove any uneaten piece, including from the hoard, within a few hours

Why

Risks. Can cause gas if fed in large amounts. Woodgreen advises not feeding the leaves.

Benefits. Low in sugar and calories, and a source of fibre and vitamins.

Questions owners ask 2

Can hamsters eat cauliflower leaves?

Woodgreen Pets Charity advises feeding only the florets and stalk and avoiding the leaves, so we suggest removing them.

Raw or cooked?

Both are fine in small amounts, as long as it is plain, with no cheese sauce, butter or seasoning.

Cauliflower: nutrition per 100 g

Water	92.1 g
Energy	25 kcal
Sugars	1.9 g
Fat	0.3 g
Protein	1.9 g
Fibre	2 g
Calcium	22 mg
Phosphorus	44 mg
Calcium : phosphorus	0.5 : 1
Sodium	30 mg
Vitamin A (RAE)	0 µg
Vitamin C	48.2 mg

“Cauliflower, raw”, USDA FoodData Central (SR Legacy, FDC 169986). Public domain.

Sources & method 4

The sources below discuss cauliflower for hamsters (or for pet rodents generally). Confidence: high. Rated on the JOMIZOO Feeding Scale; when good sources disagree we choose the more cautious level.

What to feed your hamster - safe foods, fruit, veg and a complete feeding guide — Woodgreen Pets Charity
Hamsters as pets — PDSA
Hamster Care Sheet — UC Davis Veterinary Medical Teaching Hospital, Companion Avian and Exotic Pet Medicine and Surgery Service (PDF hosted by Wise Owl Animal Hospital)
Hamster Nutrition — Dogwood Animal Hospital, Lawrenceville, Georgia