Foods that can be poisonous to pets and should be stored in closed cabinets include anything containing the sweetener xylitol, chocolate, grapes, raisins, fatty foods, macadamia nuts, walnuts, avocados, onions, garlic, fruit seeds and pits, raw dough, bones, alcohol and anything containing caffeine, says AVMA President Dr. Lori Teller. Not all people food is off limits, though, and Dr. Teller says dogs may enjoy small portions of fruits, vegetables and cooked chicken, turkey or fish without the skin or bones.