Can Dogs Eat Xylitol? Xylitol is an artificial sweetener often found in lollies, chewing gum, desserts, yogurt and peanut butter, among many other things. Ingestion of Xylitol in dogs can result in hypoglycemia (low blood sugar), seizures and liver failure. Always check ingredients before giving anything to your dog that may contain Xylitol. Xylitol is a sugar substitute – it …