Puppies start getting dog food as soon as they are weaned from the mother. Puppies will start with dog food specifically formulated for puppies and then at a year old would then graduate to dog food. Most dog foods specify age for each brand of food.
at once i think its eight8 Answer: They can have many at a time, do you recall the story about the dog giving birth to 20 or so puppies, but the average litter would be from 5 to 12 at a maximum. And it can vary on type of dog.