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Answer for Guinea pigs

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Can guinea pigs eat oranges?

Caution for guinea pigs

Sources disagree. The Royal Veterinary College and VCA list oranges as an occasional treat, but the RSPCA lists citrus fruit as harmful to guinea pigs, so we advise caution. Source: Royal Veterinary College, VCA Animal Hospitals, RSPCA

Conditions

When it is a problem

  • The RSPCA includes citrus fruits among foods that can be harmful or poisonous to guinea pigs. Source: RSPCA
  • The Royal Veterinary College lists orange among fruits fed as treats once or twice a week. Source: Royal Veterinary College

Sources

  1. RSPCA: What to feed a guinea pig (opens in a new tab)

    “Avoid these as they can be harmful or poisonous to Guinea pigs. For example: Iceberg lettuce Potato Garlic Avocado Coconut Citrus fruits”

    Read on 10 October 2026

  2. Royal Veterinary College: Feeding your guinea pig (RVC Exotics Service) (opens in a new tab)

    “Fruits (fed as treats once or twice a week): … Orange”

    Read on 10 October 2026

  3. VCA Animal Hospitals: Feeding guinea pigs (opens in a new tab)

    “Occasional choices include fruits high in vitamin C, such as orange and kiwi”

    Read on 10 October 2026

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