Researchers looked at how different diets for pregnant dogs can affect the growth and health of their puppies. They compared a limited-ingredient diet focused on fish with a standard mixed-protein diet. Although the diets didn’t change the birth weights significantly, the puppies on the limited diet had higher normalized weights relative to their mother’s body weight. Yet, puppies raised on the mixed diet tended to weigh more as they grew, especially at weaning.

For pet parents, this research highlights that what you feed a pregnant dog can leave a mark on her puppies' health. Depending on the diet, you might notice differences in your puppy's weight as they grow. It's crucial to balance the nutritional needs during this critical time to set the best foundation for your furry friend’s health. Knowing these details can help you make informed decisions if you're expecting a litter or supporting a friend who is.