Can rabbits eat onions?
RSPCA Australia lists onion and garlic among plants poisonous to rabbits, and RWAF lists the onion plant as poisonous.
Good to know: Leeks are on the RSPCA’s list of foods to avoid.
Did your rabbit eat some?
Call your vet or an emergency vet clinic right away, ideally one that treats rabbits. Tell them what your rabbit ate, how much and when.
- Outside office hours, an emergency vet clinic near you can help.
- Take the packaging or a leftover with you.
Better choices, for example
Questions
My rabbit ate onions. What should I do?
Call your vet or an emergency vet clinic right away, even if your rabbit seems fine. Tell them what it ate, how much and when.
Can guinea pigs eat onions?
Better not. PDSA lists onions, garlic and chives among foods guinea pigs shouldn’t eat. Woodgreen adds leeks, and the RSPCA names garlic too.
Sources
- RSPCA Australia – What should I feed my rabbits?
- RWAF – Plants Poisonous to Rabbits
- RSPCA – What to feed rabbits
Last checked: October 2026