On average, a dog can live for a week and a half without food. However, this number is influenced by a couple of factors. For instance, the age of the pet is crucial, as puppies need more food than adults due to their growing necessities.Next, the level of activity of the pet is also significant. An active dog needs more nutrition to live when compared to a lazy one. Additionally, breeds such as the German Shepherd are known to require a lot of food in order to survive.Last but not least, the health of the pet should also be taken into account. In other words, a pet that suffers from numerous health issues is likely not able to go on for long periods without food.