Yes, guinea pigs can eat apples in small amounts. A thin slice with the skin on is safe, but the seeds and core should be removed, and tart green apples should be offered sparingly.
Green apples vs. other apples
Any apple variety is safe in moderation. Green apples such as Granny Smith have less sugar but more acid, and the acid can irritate a guinea pig’s mouth if they eat too much. Sweeter red apples are easier on the mouth but higher in sugar. Either way, a small slice is plenty.
Can they eat the skin?
Yes. The skin is safe if the apple is washed well. If you can, buy organic or rinse and scrub to remove wax and pesticide residue.
Seeds and cores
Apple seeds contain small amounts of a compound that can release cyanide when chewed, and the core is tough. Cut out the seeds and the core before serving. A few accidental seeds are unlikely to cause harm, but there is no reason to risk it.
How much and how often
- Portion: one or two thin slices, about the size of a thumb.
- Frequency: once or twice a week at most.
- Sore mouth: if your guinea pig drools or stops eating, skip apples and call your vet.
What to avoid
- Applesauce, apple pie, caramel apples, or dried apples with added sugar.
- Apple juice.
- Moldy or bruised apples.
More fruit and veggie guides
For more ideas, check fruits and vegetables for guinea pigs, cantaloupe, and what not to feed guinea pigs.
Bottom Line
Apple is a fine occasional treat: one or two washed slices with the skin on, seeds and core removed, once or twice a week.
General information only, not veterinary advice. If your guinea pig has diarrhea, mouth sores, or stops eating, contact an exotics-savvy vet.
