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My 7 kg terrier was nosing around the grill at a backyard BBQ and got bitten on the muzzle by a small snake — what's the first thing I should do?

Dogs · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Keep him absolutely calm and still right now — carry him if you can. Movement makes the venom spread faster through his small body. Do not wash the wound, cut it, suck on it, or apply any kind of tourniquet; those outdated methods cause more tissue damage. Look for one or two tiny puncture marks and watch for rapid swelling, which can start within minutes and make his collar too tight. Call the nearest emergency vet that carries antivenom, tell them you're coming with a possible pit viper bite, and get there as quickly and smoothly as possible.

Why are snake bites so dangerous?

Venom can cause swelling, tissue destruction, bleeding problems and even paralysis. Cats and small dogs receive a proportionally larger dose. Dogs are most often bitten on the face or front legs while investigating.

Why speed matters

Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.

Signs to watch for

  • One or two small puncture wounds, pain, swelling spreading over minutes–hours
  • Panting, restlessness, drooling
  • Weakness, shaking, wobbly walk
  • Bruising or bleeding from the wound or gums
  • Collapse, difficulty breathing, paralysis (severe)

What to do right now

  1. Keep your pet calm and still — movement spreads venom faster.
  2. Do NOT cut, suck, or apply a tourniquet. These make things worse.
  3. Remove the collar if the face/neck is swelling, and carry small pets.
  4. Get to the nearest emergency vet with antivenom; call ahead so they can prepare.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

The step-by-step response, from the first minute to the vet visit, is in our Snake Bites (Viper & Pit Viper) emergency guide.

Open the full emergency guide: Snake Bites (Viper & Pit Viper) →