Pet health library

Rattlesnake bites in dogs: what to do

Prairie rattlesnakes are part of life along the Front Range. If your dog is bitten, calm, fast action gives them the best possible outcome - here's what every Northern Colorado owner should know.

A rattlesnake bite is frightening, but it is treatable - and how quickly you act matters more than almost anything else. Dogs are most often bitten on the face, muzzle or front legs while exploring trails, fields and rocky areas around Fort Collins, especially from spring through early fall.

Signs of a rattlesnake bite

Bites usually cause fast, dramatic swelling. You may or may not see the classic two puncture marks under the fur. Watch for:

  • Sudden, rapidly worsening swelling (often the face or a leg)
  • Puncture wounds, bleeding, or bruising at the site
  • Obvious pain, whimpering, or limping
  • Drooling, panting, weakness or collapse
  • Pale gums, trembling, or vomiting

What to do right away

Every minute counts. If you think your dog was bitten:

  • Keep your dog as calm and still as possible - carry them if you can
  • Move away from the snake; do not try to catch or kill it
  • Do NOT apply a tourniquet, cut the wound, or try to suck out venom
  • Do NOT apply ice, and do not give any medication unless we tell you to
  • Call us at (970) 482-7595 on your way in, or head to the nearest open veterinary hospital immediately

How we treat it

Treatment focuses on controlling pain, managing swelling and shock, and supporting your dog while the venom works through their system. Depending on severity, that can include IV fluids, pain control, monitoring, and antivenom. Most dogs who receive prompt veterinary care recover well.

If you spend time on Colorado trails with your dog, ask us about the rattlesnake vaccine and rattlesnake-avoidance training. Neither replaces emergency care, but both can help reduce the risk and severity of a bite.

Good to know

Common questions

Is a rattlesnake bite always an emergency?
Yes. Even if your dog seems okay at first, swelling and venom effects can worsen quickly. Always treat a suspected rattlesnake bite as an emergency and seek veterinary care right away.
Does the rattlesnake vaccine mean I don't have to worry?
No. The vaccine may lessen the severity of a bite and buy some time, but a vaccinated dog still needs immediate veterinary care after any bite.
What should I NOT do if my dog is bitten?
Do not apply a tourniquet, cut the wound, try to suck out venom, apply ice, or give human medication. These can do more harm than good. Keep your dog calm and get to a vet fast.

Questions? Call your Fort Collins vet.