Can guinea pigs eat iceberg lettuce?
Blue Cross says iceberg lettuce can cause diarrhea, so never give it. Romaine and other leaf lettuces are fine.
Better choices, for example
Questions
Can rabbits eat iceberg lettuce?
Better not. Iceberg lettuce is on the RSPCA’s list of foods to avoid, and RWAF discourages it because of its poor nutritional value.
Sources
Last checked: October 2026