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No, guinea pigs should not eat peanut butter. It is thick, fatty and often salted or sweetened, and the Vet Desk warns it can stick to the roof of a guinea pig's mouth or the back of its throat. Burgess says nuts are high in fat and cause indigestion in guinea pigs. Smooth, crunchy and nut-butter treats are all a no.
| Safe? | No |
| How much | None |
| How often | Never |
| Best served | Not at all: a sprig of herbs instead |
| Watch out for | Gagging, soft droppings, eating less, xylitol on the label |
Why can't guinea pigs eat peanut butter?
There are three reasons. First, the texture. The Vet Desk warns that the thick paste can stick to the roof of the mouth or the back of the throat and become a choking risk.
Second, fat. Guinea pigs are strict plant-eaters that run on hay, and the PDSA says hay and grass should make up 85 to 90% of their diet. VCA advises against nuts and seeds because they are too high in fat and carbohydrate, and Burgess says nuts are high in fat, not fibre, and cause very uncomfortable indigestion. The Vet Desk adds that a rich food like this can upset the gut, causing loose droppings, gas and pain, and in the worst case slow the gut down, which is dangerous.
Third, calories. The Vet Desk puts a single teaspoon at about 32 calories, a lot for an animal that size and a quick route to weight gain.
Smooth, crunchy, light and other spreads
- Smooth peanut butter: no.
- Crunchy peanut butter: no, and the nut pieces add a choking risk.
- Light or sugar-free: no. Some sugar-free spreads use xylitol, which the ASPCA warns can cause low blood sugar and liver damage in pets.
- Almond, cashew and other nut butters: no.
- Chocolate spreads: no. Ring your vet if any was eaten.
- Peanut butter treats, sticks or drops: no.
If your guinea pig ate a spread and the label lists xylitol (also called birch sugar or E967), ring your vet straight away, even if it seems fine.
What if my guinea pig ate peanut butter?
- Check breathing and swallowing. Gagging, pawing at the mouth or struggling to swallow needs a vet straight away.
- Take the rest away. Wipe up any left on hands, bars or the floor.
- Read the label. Look for xylitol, chocolate or added salt and sugar.
- Offer water and hay. Then watch eating and droppings for a day.
- Ring the vet if needed. Call if your guinea pig eats less, passes fewer or softer droppings, or ate more than a lick.
Who is most at risk?
Young guinea pigs and those with dental problems face the highest choking risk. Overweight guinea pigs and those with a sensitive stomach are also more likely to suffer.
What to give instead
A sprig of parsley or a strip of bell pepper makes a good hand-fed treat. Our pages on peanuts, almonds and chocolate cover other snacks. For the full menu, see what can guinea pigs eat, our guinea pig diet guide and the guinea pig care guide.
Peanut butter questions
Is a tiny lick of peanut butter OK for a guinea pig?
We wouldn't. There is no amount that does a guinea pig any good, and the Vet Desk's main worry, the thick paste sticking to the roof of the mouth or the throat, applies to a small blob as much as a big one. Hand-feed a sprig of herbs instead.
My guinea pig ate peanut butter. What should I do?
Check first that it is breathing and swallowing normally. Gagging or pawing at the mouth needs a vet straight away. Then give water and hay and watch eating and droppings for a day. Ring your vet if the jar listed xylitol, if a lot was eaten, or if your guinea pig eats less.
Can guinea pigs have treats made with peanut butter or nuts?
No. Guinea Lynx says to avoid treats with nuts and seeds, and Burgess says nuts are high in fat and cause indigestion. Many pet-shop treat sticks and drops are made with nuts, seeds or honey. Check the label and pick hay-based treats or fresh herbs.
What about almond butter or other nut spreads?
No, for the same reasons as peanut butter. VCA advises against nuts and seeds for guinea pigs because they are too high in fat and carbohydrate, and all nut butters share the same sticky texture. Chocolate spreads are worse still: ring your vet if any was eaten.
