Page last edited November 10, 2026
Dog Sudden Back Leg Paralysis: IVDD Signs & When to Call a Vet
General information only — not veterinary advice. Contact a licensed veterinarian about your pet.
Key points
- Sudden hind-leg weakness or paralysis can be caused by intervertebral disc disease (IVDD), which is reported more often in some breeds such as Dachshunds, French Bulldogs, and Corgis. Only a veterinarian can determine the cause.
- Veterinarians assess nerve function, including pain perception, during an exam. Do not attempt these checks at home; describe what you have seen to the veterinarian.
- Ask your veterinarian whether imaging, referral, or surgery is being considered for your dog, and what timing they recommend.
- Ask the veterinarian how to restrict your dog's movement until your dog is examined.
IVDD Severity: Questions to Ask Your Veterinarian
Veterinarians may describe IVDD severity using a grading scale based on their neurological exam. Grading and treatment decisions are made by the veterinarian after examining your dog. Questions you may want to ask:
- What severity does the exam suggest, and what does it mean for my dog?
- Based on your exam, can my dog still feel and move the affected legs?
- Which treatment options are you considering, and what are the trade-offs?
- What changes should make me call you back right away?
Medical Management vs. Surgery: Questions for Your Veterinarian
Whether medical management or surgery is appropriate depends on your veterinarian's findings. Ask your veterinarian to explain the options:
- Medical Management: Your veterinarian may recommend restricted activity and medications based on examination findings. Follow the prescribed rest and follow-up plan.
- Surgery: Ask whether referral to a veterinary neurologist or surgeon is being considered, what surgery would involve, and what timing is recommended.
- Recovery: Prognosis varies with each dog's findings and treatment. Ask the treating veterinarian about recovery prospects for your dog.
Breeds Reported at Higher Risk
Some breeds, often described as chondrodystrophic, are reported to have a higher risk of disc disease. Discuss your dog's individual risk with your veterinarian.
- Dachshunds can be predisposed to intervertebral disc disease; discuss individual risk with your veterinarian.
- French Bulldogs, Pugs, and Boston Terriers.
- Basset Hounds, Corgis, and Shih Tzus.
- Ask your veterinarian about everyday measures such as weight management, ramps for furniture and cars, limiting high-impact jumping, and using a harness.
While You Contact a Veterinarian About Sudden Hind Leg Weakness or Paralysis
- 1Step 1: Call an emergency veterinarian right away and tell them your dog has sudden hind leg weakness or paralysis.
- 2Step 2: Keep your dog as calm and still as you can; prevent walking, stairs, and jumping.
- 3Step 3: Do not try neurological reflex tests or press on the bladder at home.
- 4Step 4: Ask the hospital how to transport your dog and follow their instructions.
- 5General information only — not veterinary advice and no guarantee of any outcome. Follow your veterinarian's instructions.
Next steps
Suggested next steps (not a diagnosis):
Frequently asked questions
How can I tell if my dog has back pain versus hip dysplasia or an ACL tear?
Only a veterinary exam can tell these apart. Describe what you have noticed (which legs are affected, how your dog walks, signs of pain, and when it started) to your veterinarian.
What is progressive myelomalacia?
Progressive myelomalacia is an uncommon but serious complication of severe spinal cord injury. Ask your veterinarian whether it is a concern for your dog and what monitoring or treatment they recommend.
How much does MRI imaging and IVDD surgery cost?
High-field neuro MRI under general anesthesia and hemilaminectomy surgery with neuro-ICU hospitalization are major expenses. Costs vary by clinic and case; ask your veterinarian for a written estimate. Many comprehensive pet insurance plans may reimburse a portion of covered costs if enrolled prior to symptom onset.
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