Can guinea pigs eat kale?
Kale is high in calcium, so Merck says not to give it often: excess calcium may contribute to bladder stones. The RSPCA lists it as a treat for a few times a week, and Blue Cross advises moderation.
How to serve it: washed, a small amount a few times a week (RSPCA)
Good to know: Kale is high in vitamin C (PDSA, Merck). Swiss welfare sheets (Swiss animal welfare society, Tierspital Zürich) list it as normal fresh food, so we err on the side of caution.
Questions
Can guinea pigs eat kale every day?
No, only now and then and in small amounts.
Can rabbits eat kale?
Yes, but only a little. The Merck Veterinary Manual lists kale among foods rabbits should only get in limited amounts. The University of Florida also advises small amounts, while PDSA and the House Rabbit Society list it without limits.
Sources
- Merck Veterinary Manual (Pet Owner Version) – Diet for a Guinea Pig
- RSPCA – What to feed a guinea pig
- Blue Cross – Guinea pig care
- Royal Veterinary College – Feeding your guinea pig (2020)
- PDSA – Safe veg and greens for guinea pigs (graphic)
- Merck Veterinary Manual – Housing and Nutrition of Guinea Pigs
- Schweizer Tierschutz STS – Merkblatt Meerschweinchen
- Tierspital Zürich – Fütterung von Meerschweinchen und Kaninchen
Last checked: October 2026