What To Do If Your Dog Is Bitten By a Rattlesnake

Rattlesnakes are native to almost every region of the United States, but their populations are heavily concentrated in the desert Southwest and along rocky, forested areas of the East. The only U.S. states completely free of naturally occurring rattlesnakes are Alaska, Hawaii, Maine, and Rhode Island.

Rattlesnakes are most active from April through October, typically when outdoor temperatures are between 65°F and 90°F.

Dogs are especially vulnerable to snakebites because they investigate with their nose. That means their face, muzzle, chest, and front legs are all vulnerable to a bite.

If Your Dog Is Bitten by a Rattlesnake

Immediately call 911 and the nearest emergency veterinarian. If you are able to do so, carry your dog to your car. Tell the clinic you are on the way, where the bite may be, your dog’s size, and what symptoms you see.

1. Keep your dog calm and still. Dogs feed off their owners’ energy. Speak calmly and try to keep your dog quiet. Movement accelerates the flow of lymph and venom into the bloodstream.
2. Carry your dog if you can. Walking increases your dog’s heart rate, which rapidly spreads the venom through their bloodstream. If you have a large dog that you cannot lift, walk them very slowly.
3. Keep your dog warm. A snake-bitten dog can rapidly go into shock. Shock causes their body temperature to drop, so maintaining their core warmth is critical. Wrap the dog in a warm blanket, jacket, or towel to preserve their body heat. Keep the car warm while traveling. Do not use heating pads, hot water bottles, or heat lamps. Too much heat can worsen shock, cause skin burns, and speed up the spread of venom.
4. Keep the bite area at or below heart level. This slows circulation of the venom through the bloodstream.
5. Remove your dog’s collar and/or harness. This prevents breathing restrictions if swelling occurs around the neck or face.

DO NOT apply a tourniquet, ice, or attempt to suck out the venom. This can cause severe tissue damage.

DO NOT give your dog any human pain medications (such as ibuprofen or aspirin). They can worsen bleeding abnormalities and cause other fatal complications.

DO NOT wait for symptoms to appear. Even if a bite mark isn’t visible, hidden venom can be fatal.

Rattlesnake Bite Symptoms in Dogs

A rattlesnake bite can look obvious, or it can be hard to see once swelling starts. According to VCA’s snakebite envenomization overview, swelling, pain, bruising, bleeding or bloody discharge, and fast-spreading inflammation are common signs after venomous snakebites.

Watch for drooling, weakness, stumbling, vomiting, diarrhea, abnormal bleeding, difficulty breathing, collapse, seizures, or pale gums. Facial and muzzle bites are especially concerning because swelling can interfere with breathing. A smaller dog may also be at higher risk because it has less body mass to dilute a venom load.

Do not wait for symptoms to get worse. If your dog is bitten by a rattlesnake, call 911 and contact an emergency veterinarian immediately.

What the Vet Does for a Rattlesnake Bite

Veterinary treatment depends on the dog, symptoms, bite location, and whether envenomation occurred. Early treatments include pain control, IV fluids, monitoring of blood and clotting changes, and antivenom when needed.

If your dog is bitten by a rattlesnake, it is imperative to administer antivenom as soon as possible. Supportive care may also include pain management, wound care, IV fluids, bloodwork, and monitoring for complications. Severe bites can require extended wound care if tissue is damaged.

Costs can be high because antivenom is expensive and more than one vial may be needed. This should not impede the decision to seek care. It is something to consider if you are thinking of purchasing pet insurance.

How to Reduce Rattlesnake Risk on Walks and Hikes

First and foremost, keep your dog on a short leash in rattlesnake habitat. Keep your dog on designated trails. Do not allow your dog to explore brush, rock crevices, or any place where snakes may be hiding.

Stay on open, well-worn trails where you can see ahead. Avoid tall grass, brush piles, rocky edges, wood piles, and places where a snake could be warming itself or hiding. During the summer when the weather is warm, snakes are often more active at dawn and dusk.

If you see a rattlesnake, stop, give it space, and slowly back away. Do not try to engage with it.

Rattlesnake Vaccine and Aversion Training

The canine rattlesnake vaccine is designed to stimulate a dog’s immune system to produce antibodies against venom, aiming to reduce pain, swelling, and the severity of a bite. However, its efficacy remains heavily debated in the veterinary community, and its federal licensing and availability have been significantly disrupted. A vaccinated dog still needs immediate veterinary care after a bite.

Rattlesnake aversion training can be useful in high-risk areas. The goal is to teach the dog to recognize snake cues and move away instead of investigating. Seek training from a reputable professional. It is not a replacement for leash control, but it can add another layer of protection for dogs who hike often.

What to Pack During Rattlesnake Season

A useful dog snake-bite kit is not a venom kit; it is a transport and vet-readiness kit. Carry a sling, first aid supplies, emergency muzzle for limited use, slip lead, Mylar blanket, power bank, headlamp, and an emergency vet info card.

The most important item for many trail hikers is a way to carry your dog. If the bite happens a mile from the car, a sling or rescue harness can be the difference between moving quickly and trying to coax a pained dog down the trail.

See our dog snake-bite emergency kit guide for product recommendations. Consider the GPS tracker comparison in case your dog bolts after a wildlife encounter.