How much should a 2 week old puppy eat?

A two-week-old puppy is very little still and may still need formula if not nursing from his or her mother. Check with your vet to see what the best approach to feeding the puppy is. Puppies are normally weaned from their mothers around 6-8 weeks, and after then any high-quality puppy chow is fine--follow the feeding guidelines on the packaging for quantity.