Can guinea pigs eat onion?
Quick verdict
Unsafe
Key risk
Can damage red blood cells and cause digestive problems.
Why
Onion is toxic to guinea pigs and must be avoided.
Can guinea pigs eat onion, and why?
Onion is toxic to guinea pigs and must be avoided. Can damage red blood cells and cause digestive problems.
Guinea pigs are herbivores who need unlimited hay or grass, a daily portion of fresh leafy veg, and a daily source of vitamin C — which they cannot make themselves. Their gut relies on constant fibre, so too much sugar or any sudden change can cause painful bloat and diarrhoea.
Warning — what to watch for
Can damage red blood cells and cause digestive problems.
If your guinea pig has eaten onion, 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.
More foods guinea pigs might eat
Make treat time better
Handy kit for feeding guinea pigs well:
Frequently asked questions
Can guinea pigs eat onion?
Unsafe. Onion is toxic to guinea pigs and must be avoided.
What happens if my guinea pig eats onion?
Can damage red blood cells and cause digestive problems. If your guinea pig has eaten onion, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is onion poisonous to guinea pigs?
Unsafe. Onion is toxic to guinea pigs and must be avoided.
Check onion for another pet