Acana Biologically Appropriate Philosophy – Our pet dog and cat companions are descendants of wild wolves and big cats and though they have been domesticated over the years. Remember to wash your pet’s bowls often. They easily pick up bacteria and other harmful microbes so it is important to wash them out regularly to keep your pet from falling sick. Anatomically, they continue to have features that are designed for a meat-based diet. It is to suit these biological needs that Acana food recipes have a large portion of meat protein.