1-2 times a week
Guinea pigs can eat quince as an occasional treat because it is high in sugar and should be limited to a 1 cm x 1 cm piece twice a week. It also contains calcium and is slightly acidic, so it should be fed sparingly to avoid potential digestive issues. Overall, quince can be a tasty treat for guinea pigs, but it should be given in moderation to ensure their overall health and well-being.