Be cautious with young puppies as certain dogs with immature digestive systems can be sensitive to calorie dense, high protein foods and suffer gastrointestinal issues. (feedingmydogbreed.com)
The baby's immature digestive system allows large particles of food to be absorbed. (westonaprice.org)
What we get is instant and enriched; no nutritional value for immature digestive systems. (mamanatural.com)