How long should a puppy be on milk replacer for?

Puppies typically require milk replacer until they are about 4 to 6 weeks old, as this is when they start transitioning to solid food. It's important to gradually introduce solid food while continuing to provide milk replacer to ensure proper nutrition. After this period, you can slowly reduce the amount of milk replacer while increasing solid food until they are fully weaned by around 8 weeks of age. Always consult with a veterinarian for specific guidance tailored to your puppy's needs.