Can pets eat acorns? 🌰
Here’s whether acorns is safe for each kind of pet, based on established veterinary guidance.
Can dogs eat acorns?
UnsafeAcorns are poisonous to dogs and must never be eaten.
Risk: Tannins and gallotannins can cause vomiting, diarrhoea and kidney or liver damage, and whole acorns can cause blockages.
Full guidance: can dogs eat acorns? →Can cats eat acorns?
UnsafeAcorns are toxic to cats and must be avoided.
Risk: Tannins can cause stomach upset and organ damage.
Full guidance: can cats eat acorns? →Can rabbits eat acorns?
UnsafeNever let rabbits eat acorns.
Risk: Tannins are toxic and can cause serious illness; oak leaves are also harmful.
Full guidance: can rabbits eat acorns? →Can guinea pigs eat acorns?
UnsafeAcorns are toxic to guinea pigs and must be avoided.
Risk: Tannins can cause severe poisoning.
Full guidance: can guinea pigs eat acorns? →Can hamsters eat acorns?
UnsafeNever give acorns to hamsters.
Risk: Tannins are toxic and dangerous in such a small animal.
Full guidance: can hamsters eat acorns? →Worried your pet has eaten too much?
Contact your vet straight away, or call the Animal PoisonLine on 01202 509000 (24/7, UK). This page is general guidance based on veterinary sources and isn’t a substitute for professional advice — amount, preparation and your pet’s health all matter.
Related foods
Sources
Our guidance on whether pets 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.