Can rabbits eat acorns?
Quick answer: No — acorns is not safe for rabbits and should never be given.
Quick verdict
Unsafe
Key risk
Tannins are toxic and can cause serious illness; oak leaves are also harmful.
Why
Never let rabbits eat acorns.
Can rabbits eat acorns, and why?
Never let rabbits eat acorns. Tannins are toxic and can cause serious illness; oak leaves are also harmful.
Rabbits are herbivores: roughly 85% of their diet should be good-quality hay or grass, plus a daily handful of leafy greens, with only small amounts of other veg and tiny occasional fruit. They have a sensitive hindgut that depends on constant fibre — sudden changes, sugar or starch can trigger dangerous gut stasis and bloat.
Warning — what to watch for
Tannins are toxic and can cause serious illness; oak leaves are also harmful.
If your rabbit has eaten acorns, don’t wait for symptoms — contact your vet immediately, or call the Animal PoisonLine on 01202 509000 (24/7, UK). Signs of a problem can include vomiting, diarrhoea, drooling, lethargy, tremors or loss of appetite.
🚨 Find an emergency vet near youMore foods rabbits might eat
Make treat time better
Handy kit for feeding rabbits well:
Frequently asked questions
Can rabbits eat acorns?
Unsafe. Never let rabbits eat acorns.
What happens if my rabbit eats acorns?
Tannins are toxic and can cause serious illness; oak leaves are also harmful. If your rabbit has eaten acorns, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is acorns poisonous to rabbits?
Unsafe. Never let rabbits eat acorns.
Free printable: safe & toxic foods for rabbits
acorns is just one food — get the full one-page checklist of what’s safe, fine in moderation, or dangerous for rabbits. Vet-sourced, yours to print and keep.
Check acorns for another pet
Sources
Our verdict on whether rabbits can eat acorns draws on established UK and US veterinary and welfare organisations. Individual pets, quantities and preparation vary — always confirm with your own vet.