Not all human food is safe for dogs, and some can even be deadly. German Shepherd puppies must never be given onions, garlic, avocado, grapes, raisins, citrus fruits, pomegranate, or raw broccoli. These foods can damage their digestive system, cause poisoning, or lead to long-term health problems.
Always check what your puppy eats and keep dangerous foods out of reach. When in doubt, consult your vet before introducing new items to their diet.