11. MACADAMIA NUTS
Dogs can eat many nuts (yes, even peanuts and peanut butter) without issue, but macadamia nuts are not among those. They are one of the most potentially dangerous human foods for puppies to eat. If consumed in even small amounts, macadamia nuts can cause neurological symptoms like weakness, vomiting, walking "drunk," tremors, lameness (especially in the rear legs) or even a complete (but temporary) inability to walk. If you have a puppy, pick another nut to snack on, at least until you can train it not to eat your snacks. Read about more potentially harmful foods in our guide to dangerous people food for pets.