Xylitol is a sugar substitute found in some candies and gum, but can also be found in other foods that people might not be aware of, one of them is peanut butter.
A lot of people give peanut butter to their dog as a treat, smear it on their dog's toys or use it to hide their pills.
Xylitol is very harmful to dogs, so please read the ingredients label on the peanut butter jar before giving it to your pet. To be on the safe side, read the labels of any food that is meant for people to be sure that the sweetener is not in it.