The B vitamin group includes several vitamins that work together to convert food into energy. B vitamins are essential for a puppy’s nervous system and cognitive development. Key B vitamins for puppies include B1 (thiamine), B2 (riboflavin), B3 (niacin), B6 (pyridoxine), and B12 (cobalamin). These can typically be found in high-quality puppy food, meats, and certain grains.