The digestibility of our food has been validated through an in vitro digestibility test performed by a university laboratory. The test found that dogs digest ~80% of nutrients in our diet, including protein-specific digestibility of 80%. This digestibility result is similar to meat-inclusive formulas and provides peace of mind that dogs are able to derive more than enough protein and essential amino acids from our diet.Digestibility is not a stand-alone metric of nutrient quality, but an important factor to consider when formulating a diet to ensure you are providing enough bio-available forms of every nutrient.Factors like fiber levels can decrease protein digestibility, but that does not make diets with more fiber (like Petaluma) less healthy as long as the dog is still absorbing sufficient amounts of protein. In fact, the additional dietary fiber brings a number of important metabolic benefits.