For decades, the disciplines of animal behavior (ethology) and veterinary science ran on parallel tracks. Veterinary medicine was historically focused on the physiological—repairing the broken bone, eradicating the parasite, dosing the infection. Ethology, conversely, was often relegated to the academic observation of wildlife or the training of domestic pets. However, in modern practice, a profound shift has occurred: the realization that you cannot treat the body without understanding the mind.