Fruits:
* Citrus fruits: Oranges, lemons, grapefruits, limes (These are acidic and can cause digestive issues.)
* Avocado: Contains persin, which is toxic to guinea pigs.
* Stone fruits: Peaches, plums, cherries (The pits contain cyanide.)
* Grapes and raisins: Can cause kidney problems.
* Rhubarb: Contains oxalic acid, which can be harmful.
Vegetables:
* Onions and garlic: Can damage red blood cells.
* Spinach and other leafy greens with high oxalic acid: Spinach, kale, Swiss chard (Can interfere with calcium absorption.)
* Potatoes: The green parts and sprouts contain solanine, which is poisonous.
* Tomatoes: Green tomatoes contain solanine. Ripe tomatoes are fine in moderation.
* Mushrooms: Can cause digestive upset.
* Rhubarb: Contains oxalic acid.
* Corn: Can cause digestive issues and may be high in carbohydrates.
Important Notes:
* Moderation is key: Even safe fruits and vegetables should be given in small amounts and as treats, not as a staple part of the diet.
* Introduce new foods gradually: To avoid digestive upset, introduce new foods one at a time and observe your guinea pig for any adverse reactions.
* Always consult a veterinarian: If you have any concerns about your guinea pig's diet, it's best to consult a veterinarian who specializes in small animal care.
Remember, a healthy guinea pig diet consists mainly of hay, with fresh vegetables and a small amount of pellets as supplements.