Can a 4 week old puppy go all night without eating?
Mia Lopez
Updated on March 15, 2026
In summary, your puppy can survive without eating for up to 5 hours when he is between 4 to 7 weeks, but we do not recommend your pup waiting this long as they are going through a developmental period. If your puppy is between 6 to 8 weeks old, he can survive without eating for up to 8 hours.