If your pet is in immediate danger, call your vet or emergency animal hospital NOW. ASPCA Poison Control: (888) 426-4435 | Pet Poison Helpline: (855) 764-7661
Snake Bite in Pets
Snake bites are a serious emergency, particularly from venomous species such as rattlesnakes, copperheads, cottonmouths (water moccasins), and coral snakes. Dogs are more commonly bitten than cats, typically on the face or legs. The severity depends on the snake species, the amount of venom injected, the size of the pet, and the bite location.
Symptoms to Watch ForWarning Signs
- Sudden pain, yelping, or whimpering
- Rapid swelling at the bite site
- Two small puncture wounds (may be hard to see under fur)
- Bleeding from the bite wound
- Weakness, collapse, or trembling
- Vomiting and diarrhea
- Difficulty breathing
- Dilated pupils
- Paralysis (especially with coral snake or neurotoxic venom)
Immediate First AidAct Now
- 1Keep your pet calm and limit movement — activity spreads venom faster
- 2Carry your pet if possible rather than letting them walk
- 3If you can safely identify the snake, note its appearance (do NOT try to catch it)
- 4Do NOT apply a tourniquet, ice, or attempt to suck out the venom
- 5Do NOT give any over-the-counter medications
- 6Remove collars or anything that could constrict swelling
- 7Transport to the nearest emergency vet immediately — antivenom is the primary treatment
When to Call the Vet
- Always — all snake bites should be treated as potential emergencies
- Even non-venomous bites can become seriously infected
- Swelling that is rapidly increasing is a sign of envenomation
- Antivenom is most effective when given within 4-6 hours
Additional Information
Prevention tips: keep your yard clear of brush and tall grass, supervise pets outdoors in snake-prone areas, consider snake aversion training for dogs in high-risk regions, and avoid walking near rock piles, logs, or tall grass during warm months. There is a rattlesnake vaccine for dogs that may reduce the severity of symptoms, but it does not replace the need for emergency treatment.