The piloerection response along the back and neck of a canine, resulting in raised fur, is a visual display linked to the autonomic nervous system. This physiological reaction, similar to goosebumps in humans, is often observed when the animal is feeling threatened, excited, or insecure. The bristling hairs extend from the shoulders to the tail, creating the appearance of increased size.
This phenomenon serves multiple purposes. It can be a warning signal to other animals, communicating potential aggression or defensiveness. Furthermore, the raised fur makes the animal appear larger, which can deter potential predators or rivals. The response is an instinctive behavior, rooted in evolutionary history, and contributes to the animal’s survival strategies.
