One of the most difficult intersections of behavior and veterinary science is . When an animal has severe, untreatable aggression—often due to structural brain abnormalities or genetic predispositions—veterinarians face an ethical crisis. Is a dog with rage syndrome (idiopathic aggression) suffering? Behavioral science says yes. Chronic anxiety and the inability to inhibit aggression cause a poor quality of life, even if the body is physically healthy.

It was a linguistic bridge. That single sound signaled that the leopard’s —the part of the brain responsible for decision-making—had finally overridden the autopilot of her trauma. The Mirror Effect

His toughest case yet arrived in the form of Barnaby, a massive, jittery Great Dane who had developed a peculiar habit: he refused to step on any surface that wasn't blue. His owners were exhausted, having laid a trail of blue yoga mats from the front door to the food bowl just to keep him moving.