Intervertebral disk disease (IVDD), sometimes referred to as a slipped or herniated disk, refers to a syndrome of pain and neurological problems that accompany degeneration of one or more intervertebral disks. These disks are pillow-like pads that act as shock-absorbers between adjoining vertebrae - the bones that make up the backbone or spine. Intervertebral disks can become displaced, deteriorate, collapse, bulge out (protrude), rupture or herniate in dogs as a result of gradual degeneration due to conformational abnormalities, obesity, genetics, repetitive trauma or other factors. This compresses the spinal cord and nerves at the damage site. Dogs with IVDD have symptoms ranging from mild pain (lowered head, reluctance to move, stiffness, sensitivity to touch), to severe pain (arched back, lameness, dragging legs, inability to stand, crying when touched or moving, trembling, staggering, collapse), to partial or complete paralysis. IVDD is one of the most common neurological disorders in companion animals and reportedly affects 2% of the domestic dog population.