Cool Sick Dog Hair Standing Up On Back References. Piloerection, also known as “raised hackles,” refers to the phenomenon in which the hairs on a dog’s body stand up,. That said, a dog arching its back and walking off balance is a telltale sign of intervertebral disc.

This is an involuntary reaction that is controlled by the dog’s. Web discover why the hair on a dog's back stands up with our comprehensive guide. A dog’s hair standing on end is commonly known as ‘hackles.’.