Even though a dog may think something is appetizing, and try to eat it, that doesn’t always work out for the dog and his or her health. Some types of foods can cause serious damage to the digestive system of a dog, or in some cases, even quickly cause critical heart problems.
Garlic and onions, and anything that may contain them, should not be given to dogs. Onion and garlic can damage the red blood cells of both cats and dogs. This includes any raw ingredients, powders, and products that have been prepared with trace amounts of either substance. An example would be with baby food, which often contains a trace amount of either garlic or onion for flavoring purposes.
Xylitol is an artificial sweetener that can also harm your dog. You find xylitol in most types of gum, as it is an artificial sweetener. It is also the main ingredient in alternative sugar substitutes. The sweetener can cause liver failure if eaten in moderate quantities, so it’s best to avoid your dog eating it even in small amounts.