Can guinea pigs eat lettuce?
Merck says romaine and green or red leaf lettuce are popular greens, and the RSPCA lists them among foods to give often. Iceberg is the exception (Blue Cross).
How to serve it: washed
Questions
Can guinea pigs eat lettuce every day?
Yes, as part of the daily fresh food. It’s best to rotate: several kinds of greens are better than a lot of one.
Can rabbits eat lettuce?
Yes, as fresh food. Dark leafy lettuces such as romaine are suitable for rabbits (RSPCA, Royal Veterinary College). Iceberg and light-colored lettuces are not.
Sources
- Merck Veterinary Manual (Pet Owner Version) – Diet for a Guinea Pig
- RSPCA – What to feed a guinea pig
- Blue Cross – Guinea pig care
Last checked: October 2026