Can hamsters eat pumpkin?

Yes — safe in normal portions

Yes. Plain pumpkin flesh is safe for hamsters in small pieces, raw or cooked. Avoid pumpkin pie filling and anything with added sugar or spice.

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: One to three times a week, rotated with other vegetables.
Dwarf hamsters: Pumpkin is less sugary than fruit, but keep portions small (about 5 mm, ¼ in) for diabetes-prone dwarfs.
Sugar: 2.8 g / 100 g

How to serve it

Wash, peel and remove the seeds and stringy pulp
Cut a small cube of flesh; serve raw or cooked plain and cooled
Never use pie filling, spiced or sweetened pumpkin
Remove any uneaten piece, including from the hoard, within a few hours

Why

Risks. Low risk in small amounts; large portions can loosen droppings. Soft, cooked pumpkin spoils quickly if hoarded.

Benefits. Contains beta-carotene and fibre, and is moderately low in sugar compared with fruit.

Questions owners ask 2

Can hamsters eat pumpkin seeds?

Plain, unsalted pumpkin seeds can be an occasional treat, but they are high in fat: one seed for a Syrian, or a small piece of a shelled seed for a dwarf, once or twice a week at most.

Is canned pumpkin OK?

Plain canned pumpkin with nothing added is fine in a tiny amount. Pumpkin pie filling contains sugar and spices and should not be given.

Pumpkin: nutrition per 100 g

Water	91.6 g
Energy	26 kcal
Sugars	2.8 g
Fat	0.1 g
Protein	1 g
Fibre	0.5 g
Calcium	21 mg
Phosphorus	44 mg
Calcium : phosphorus	0.48 : 1
Sodium	1 mg
Vitamin A (RAE)	426 µg
Vitamin C	9 mg

“Pumpkin, raw”, USDA FoodData Central (SR Legacy, FDC 168448). Public domain.

Sources & method 4

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

Hamsters as pets — PDSA
Rodents: Feeding — VCA Animal Hospitals (Gregory Rich, DVM; Laurie Hess, DVM; Rick Axelson, DVM)
Hamster Nutrition — Dogwood Animal Hospital, Lawrenceville, Georgia
Syrian Hamster Care Sheet — PetMD (written by Maria Zayas, DVM)