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Yes, guinea pigs can eat a little fresh pineapple. One small cube, about 10 to 15 g (half an ounce), once a week at most is a safe treat. Pineapple has a good amount of vitamin C, but it is sugary and acidic, which can upset the gut and make lips sore, so never give the skin, core, leaves or tinned pineapple.
| Safe? | Yes, as a small treat |
| How much | One cube about 2.5 cm (1 in), 10 to 15 g |
| How often | Once a week at most |
| Best served | Fresh, ripe flesh only |
| Watch out for | Sore lips, soft droppings, skin and leaves |
Is pineapple good for guinea pigs?
In small amounts, yes. The vet-reviewed guide at The Vet Desk says guinea pigs can eat small amounts of pineapple as an occasional treat. Worked out from the Guinea Lynx food chart, pineapple has about 48 mg of vitamin C per 100 g (3.5 oz), similar to an orange, and about 10 g of sugar.
The drawbacks are sugar and acid. The PDSA and Burgess both say fruit should be given only in very small amounts because of its sugar. The Vet Desk adds that pineapple's acidity can irritate a guinea pig's mouth and gut, leading to mouth sores, and that too much can cause diarrhoea.
How much pineapple can a guinea pig have?
One cube about 2.5 cm (1 in) across, 10 to 15 g, per guinea pig, once a week at most. That matches The Vet Desk's advice. You can give it in one go or split it over two days. The PDSA suggests any treat only once every week or two, so don't give pineapple in the same week as other sweet fruit like mango.
How to prepare pineapple
- Use fresh pineapple. Pick a ripe, fresh fruit, not tinned.
- Cut off the crown and skin. Slice away the leafy top and all the skin, including the brown eyes.
- Remove the core. Cut out the hard centre.
- Cube it. Cut one cube about 2.5 cm (1 in) and offer it in the bowl.
- Clear up. Remove sticky leftovers by the end of the day.
Skin, core, leaves, tinned and dried
- Fresh flesh: yes, one small cube.
- Skin and eyes: no, coarse and prickly.
- Core: no, tough and hard to digest.
- Leaves (crown): no, sharp and prickly. Woodgreen lists pineapple leaves among foods guinea pigs should not eat.
- Tinned pineapple and juice: no.
- Dried or candied pineapple: no, concentrated sugar.
Who should avoid pineapple?
Skip it for guinea pigs with sore, crusty or cracked lips, overweight guinea pigs, those with soft droppings or a sensitive stomach, and young guinea pigs. If yours has eaten a lot, offer extra hay and water, and ring a vet if droppings stay loose for more than a day or it stops eating. Our guinea pig health guide explains other signs.
What to offer instead
For vitamin C without the acid, bell peppers are the best daily food. Gentler fruit treats include strawberries and kiwi, and oranges follow the same rare rule as pineapple. See the safe food list, our guinea pig diet guide and the guinea pig care guide.
Pineapple questions
Can guinea pigs eat pineapple core?
We'd leave it out. The vet-reviewed guide at The Vet Desk says the core is not toxic but is tough and hard to digest, and can cause blockages and stomach trouble. Guinea pigs get all the chewing they need from hay, so there is nothing to gain from the core.
Can guinea pigs eat pineapple skin or leaves?
No. The Vet Desk warns that the skin is coarse and may carry growing chemicals, and that its thorns and the prickly leaves can cut the mouth and throat or cause choking. Cut the skin and crown away completely and give only the soft, yellow flesh.
Can guinea pigs eat tinned pineapple?
No. Tinned pineapple sits in syrup or juice, which adds sugar to an already sweet, acidic fruit. The Vet Desk says tinned and juiced pineapple should be avoided. If you give pineapple at all, use a small cube of fresh fruit.
Can pineapple give guinea pigs mouth sores?
It can if fed often. Pineapple is acidic, and The Vet Desk notes it can irritate the mouth and cause sore, crusty lips. Keep it to one small cube a week, and stop all acidic fruit if you see red, cracked or scabby lips, then ask a vet to check them.
