3D illustration: a hamster next to a dish of oranges
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Hamster · Fruit

Can hamsters eat oranges?

Better not

Better not. Vets and UK animal charities advise against citrus fruit such as oranges, lemons and grapefruit for hamsters because it can upset their digestion.

Sugar
9.4 g / 100 g

If your hamster already ate some

A small piece is not an emergency. Remove any leftovers, make sure fresh water is available and watch for diarrhoea, a wet or dirty tail area, or reduced appetite over the next day or two. Contact a vet promptly if these appear, as diarrhoea can become serious quickly in hamsters.

Why

Risks. Citrus is very acidic and is widely reported to cause digestive upset in hamsters. PDSA notes that newer research questions this, but still advises avoiding citrus until the evidence is clearer.

Benefits. Hamsters make their own vitamin C, unlike guinea pigs, so they gain little from citrus.

Questions owners ask 2

Can hamsters eat lemon, lime, grapefruit or clementine?

No. All citrus fruits carry the same advice, and the peel should not be given either.

Does my hamster need vitamin C from fruit?

No. Unlike guinea pigs, hamsters make their own vitamin C, so a complete pellet diet covers their needs.

Oranges: nutrition per 100 g

Water86.8 g
Energy47 kcal
Sugars9.4 g
Fat0.1 g
Protein0.9 g
Fibre2.4 g
Calcium40 mg
Phosphorus14 mg
Calcium : phosphorus2.86 : 1
Sodium0 mg
Vitamin A (RAE)11 µg
Vitamin C53.2 mg

“Oranges, raw, all commercial varieties”, USDA FoodData Central (SR Legacy, FDC 169097). Public domain.

Sources & method 8

The sources below discuss oranges 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.

  1. What to feed your hamster - safe foods, fruit, veg and a complete feeding guide — Woodgreen Pets Charity
  2. Hamsters as pets — PDSA
  3. Dwarf Hamster Care Sheet — PetMD (written by Maria Zayas, DVM; reviewed by Melissa Witherell, DVM)
  4. What Can Hamsters Eat? — PetMD (written by Angelina Childree, LVT; reviewed by Melissa Witherell, DVM)
  5. Can Hamsters Eat Broccoli & What to Feed Your Hamster — Northgate Veterinary Clinic, Seattle
  6. Hamster Nutrition — Dogwood Animal Hospital, Lawrenceville, Georgia
  7. Rodents: Feeding — VCA Animal Hospitals (Gregory Rich, DVM; Laurie Hess, DVM; Rick Axelson, DVM)
  8. 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)

Other pets

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