Can guinea pigs eat milk?
Quick verdict
Unsafe
Key risk
Herbivores cannot digest dairy; it can cause serious upset.
Why
Milk is not suitable for guinea pigs.
Can guinea pigs eat milk, and why?
Milk is not suitable for guinea pigs. Herbivores cannot digest dairy; it can cause serious upset.
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
Herbivores cannot digest dairy; it can cause serious upset.
If your guinea pig has eaten milk, 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 milk?
Unsafe. Milk is not suitable for guinea pigs.
What happens if my guinea pig eats milk?
Herbivores cannot digest dairy; it can cause serious upset. If your guinea pig has eaten milk, contact your vet or the Animal PoisonLine (01202 509000) straight away — don’t wait for symptoms.
Is milk poisonous to guinea pigs?
Unsafe. Milk is not suitable for guinea pigs.
Check milk for another pet