Rattitude CareCan rats eat walnuts?
No — avoid
No. The RSPCA and PDSA both list walnuts as harmful to rats.
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- Serving
- Never
- How to prepare
- Do not feed
- Benefits
- None
The details
Nuts in general are also very high in fat, and rats gain weight easily. If you want a foraging treat, the RSPCA suggests a few sunflower seeds or peanuts for rats to handle and work at — counted as part of the daily food.
What to do if your rat ate it
Call a vet straight away — ideally one who treats exotic pets — and don't wait for symptoms. Rats can't vomit, and the RSPCA warns that even a small amount of something harmful can kill them. Tell the vet what your rat ate, roughly how much and when, and bring the packaging if there is one. Don't try home remedies or human medicines: the RSPCA warns these are very dangerous to rats.
Sources
Last updated: September 29, 2026
This guide is general information based on RSPCA and PDSA guidance and does not replace a veterinarian. If your rat seems unwell, please contact an exotic-pet vet.