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No, guinea pigs should not eat rice, cooked or uncooked. Rice is a starchy grain, and the Vet Desk's vet-reviewed advice is that a guinea pig's gut is not meant to digest grains, and that they should not eat cooked food at all. Brown rice, rice cakes and puffed rice are a no too. A few stray grains are rarely serious.
| Safe? | No |
| How much | None |
| How often | Never |
| Best served | Not at all: hay and greens instead |
| Watch out for | Soft droppings, swollen belly, eating less |
Why can't guinea pigs eat rice?
Because rice is concentrated starch, and guinea pigs are grazers. The PDSA says hay and grass should make up 85 to 90% of their diet. That long, coarse fibre keeps the gut moving and wears down teeth that grow all their lives.
The Vet Desk says guinea pig digestion does not cope well with complex carbohydrates and sugar, and that their systems are not meant to digest grains. VCA advises against oats, seeds and dry cereals for the same reason: too much carbohydrate. Burgess says high-carbohydrate foods like pasta cause digestive problems. A rush of starch feeds the wrong gut bacteria, which can mean gas, bloating and loose droppings.
Cooked, uncooked and rice foods
- Cooked white or brown rice: no. The Vet Desk says guinea pigs should never eat cooked food.
- Uncooked rice: no. Same starch, in a hard, dry grain.
- Rice cakes, puffed rice, rice crackers: no.
- Fried rice, risotto, rice pudding: no, and they often add oil, onion, garlic or milk.
- Rice in guinea pig treats or mixes: skip them. Woodgreen warns against mixes with cereals.
Leftover rice dishes are often cooked with onion or garlic, which the PDSA lists as unsafe for guinea pigs. If yours has eaten a savoury rice dish, ring your vet and tell them what was in it.
What if my guinea pig ate rice?
- Take it away. Pick up any grains from the cage, floor or bedding.
- Note what it was. Plain or flavoured, cooked or raw, and how much.
- Give hay and water. Keep the hay rack full.
- Watch for a day. Check for eating less, fewer droppings, a hunched back or a tight belly.
- Ring the vet if needed. Guinea Lynx says bloat can be fatal if left untreated, and that a guinea pig that stops eating needs a vet straight away.
Who is most at risk?
Young guinea pigs, older ones, any with a sensitive stomach or dental problems, and those that are overweight.
What to give instead
For a hand-fed extra, give a piece of cucumber or a strip of bell pepper. Other starchy foods are no as well: see our pages on bread, Weetabix and popcorn. For the full menu, read what can guinea pigs eat, our guinea pig diet guide and the guinea pig care guide.
Rice questions
Can guinea pigs eat uncooked rice?
No. Raw rice is the same starchy grain in a hard, dry form, and VCA advises against high-carbohydrate seeds and cereals for guinea pigs. Dry grains are also hard to chew safely. Hay is the only hard, dry food a guinea pig needs to graze on.
Is brown rice better than white rice for guinea pigs?
No. Brown rice has a little more fibre than white, but it is still mostly starch, and the Vet Desk's vet-reviewed advice is that guinea pigs should not have rice at all. The coarse fibre they need comes from hay and grass, which the PDSA says make up 85 to 90% of the diet.
Can guinea pigs eat rice cakes or puffed rice?
No. Rice cakes and puffed rice are dry, starchy grain snacks, and many have salt, sugar or flavourings added. VCA lists dry cereals among the foods guinea pigs should not have, and Woodgreen warns against cereal pieces in guinea pig food.
My guinea pig ate some rice. What should I do?
A few grains are unlikely to harm a healthy adult. Take away the rest, give hay and water, and watch eating and droppings for a day. Ring your vet if your guinea pig stops eating, has a swollen belly, seems hunched or has diarrhoea, or if the rice had onion or garlic in it.
