TL;DR: An arched back in dogs usually indicates pain from spinal or abdominal issues and typically requires a veterinary exam within 24 hours, though immediate care is needed if they cannot walk or stand.
What does it mean if my dog has an arched back?
An arched back in dogs, medically referred to as kyphosis, is typically a sign that your pet is in pain. This posture is often a protective reflex where the dog hunches over to guard a sensitive area, similar to how a person might curl up when they have a stomach ache or a sore back. The source of the pain is usually related to the spine, such as Intervertebral Disc Disease (IVDD), or abdominal issues like pancreatitis.
Is an arched back in my dog a veterinary emergency?
- The urgency level for a dog walking with an arched back is typically rated as Medium, requiring a veterinary consultation within 24 hours.
- While rarely a split-second life-or-death situation, it indicates significant discomfort that must be addressed.
- Upgrade to an immediate emergency if the posture is accompanied by respiratory distress, dragging paws, inability to stand, or paralysis.
Why should I take a photo or video of my dog's posture for the vet?
- Capture a clear photo of your dog's posture or a short video of them walking to provide invaluable evidence for your vet.
- Visuals are helpful because dogs often experience an adrenaline rush at the clinic that can temporarily mask pain or gait issues.
- Having evidence from home allows the vet to see the exact degree of the arch and stiffness in a natural environment, leading to a more efficient diagnosis.
Clinical Context (Merck Veterinary Manual)
An arched back in dogs can be associated with lumbosacral junction abnormalities, including congenital anomalies such as lumbosacral ankylosis or intervertebral ankylosis, disc degenerative lesions (fissuration, cavitation, dystrophic mineralization, ventral herniation), intervertebral malalignment (spondylolisthesis), and intertransverse lumbosacral osteoarthrosis. Acute and severe strain of the sacroiliac ligaments, often related to injury, can cause severe pain in the pelvic or sacroiliac region, accompanied by marked hindlimb lameness. Syringohydromyelia, characterized by fluid-filled cavities within the spinal cord, may also present with spinal pain and scoliosis, potentially stemming from trauma, neoplasia, inflammatory conditions, or developmental malformations, with caudal occipital malformation syndrome being a common cause. Arterial thromboembolism, especially at the distal aortic trifurcation, can result in acute, painful paraparesis, an inability to flex or extend the hock, decreased sensation distal to the hock, and firm, painful gastrocnemius and cranial tibial muscles.
Chapter: Neurology, Orthopedics
Source: The Merck Veterinary Manual, 11th Edition (Page 1147)