Many people are unaware of foods that are forking hazardous to dogs. We’re not born knowing what these forking foods are someone has to tell you. I’m certain that more foods will be added to this list but this was the most current information I can find at this time.
This is the ASPCA.ORG List of foods that are hazardous to dogs.
Avocado
Bread Dough
Chocolate
Alcohol
Grapes and Raisins
Hops
Macadamia Nuts
Moldy Foods
Onions and Garlic
Xylitol
I found a few other foods mentioned at ENTIRELYPETS.COM posted by James Wickboldt
Chocolate, Coffee, Caffeine
Raw Eggs
Xylitol
Onions
Milk, Dairy
Grapes, Raisins, Currants
Mushrooms
Raw Fish, Meat, Bones
Avocados
Macadamia Nuts
Also noted Rat and Mouse Baits can be deadly for pets.
Be cool and forking  remember this list!