Xylitol

Eating foods that contain xylitol can cause a dog’s blood sugar to drop drastically. This can cause health problems, liver failure, and death. Xylitol is a sugar alcohol that is commonly used to sweeten candies, gum, toothpaste, and baked products. While it is considered safe for human eating, it can be fatal to dogs.

Eating xylitol-containing foods can cause a considerable reduction in a dog's blood sugar. Initial symptoms, such as vomiting, weakness, sadness, trouble moving, unconsciousness, and seizures, may appear within 30 minutes after ingestion. Xylitol can eventually cause liver damage and death in your pets.