Veterinarians now view behavior as a "fifth vital sign," right alongside temperature, pulse, respiration, and pain.
Similarly, an otherwise friendly dog that begins snapping when touched near the back may not be developing "aggression." It may be suffering from intervertebral disc disease (IVDD) or chronic arthritis. By merging behavioral observation with diagnostic imaging, veterinary science transforms a misunderstood "bad dog" into a patient with a treatable condition. Zoofilia Comics