Can guinea pigs eat mayonnaise?
Quick verdict
Unsafe
Key risk
Egg, oil and fat are harmful to herbivores.
Why
Guinea pigs cannot have mayonnaise.
Can guinea pigs eat mayonnaise, and why?
Guinea pigs cannot have mayonnaise. Egg, oil and fat are harmful to herbivores.
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
Egg, oil and fat are harmful to herbivores.
If your guinea pig has eaten mayonnaise, 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 guinea pigs might eat
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Frequently asked questions
Can guinea pigs eat mayonnaise?
Unsafe. Guinea pigs cannot have mayonnaise.
What happens if my guinea pig eats mayonnaise?
Egg, oil and fat are harmful to herbivores. If your guinea pig has eaten mayonnaise, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is mayonnaise poisonous to guinea pigs?
Unsafe. Guinea pigs cannot have mayonnaise.
Check mayonnaise for another pet