Scorpion Stings in Tortoises and Turtles

Here in the Southwest, encounters between pet tortoises or turtles and scorpions are not uncommon. The Arizona Bark Scorpion(Centruroides exilicauda) is the only scorpion in North America whose venom can cause serious systemic illness in both people and pets — including chelonians (tortoises and turtles).

At Tree of Life Exotic Pet Medical Center, we occasionally see scorpion stings in reptile patients and want owners to know what to watch for, and what to do if their pet is stung.

Where Are Bark Scorpions Found?

• Native to the Southwest U.S. and Northern Mexico, including Arizona, New Mexico, southern Utah, California, and the Baja peninsula.

• Often found around homes and landscaping, especially in desert environments.

• Because they’re common in yards and sometimes indoors, tortoises and turtles kept outside in these regions are at risk of encounters.

How the Venom Works

Bark scorpion venom is a neurotoxinthat affects sodium and potassium channels in nerves. This leads to abnormal nerve firing, muscle tremors, pain, and excessive secretions.

• Onset of symptoms is usually within 15–20 minutesafter the sting.

• The severity depends on how much venom was injected and the size of the animal.

Signs of Scorpion Sting in Chelonians

Watch for these clinical signs if you suspect a sting:

• Excessive saliva or bubbles from the nose/mouth

• Reluctance to walk or move legs, signs of pain

• Extended neck, open-mouth breathing (gaping)

• Muscle twitching, tremors, or spasms

• Minimal swelling at the sting site (if there is a lot of swelling, it may not be from a bark scorpion)

Because sudden death is possible in severe cases, immediate veterinary care is strongly advisedif these signs are seen.

Treatment Options

There is no “at-home cure” for scorpion venom, but treatment can greatly improve outcomes. Care is primarily supportive and symptomatic, and may include:

• Medicationsto control secretions, reduce pain, and relax muscles

• Fluidsto support hydration and circulation

• Antivenom (Arascorp/Alacramyn):In some cases, antivenom may be available, but it must be given very quickly after envenomation to be effective

• Hospitalization:If symptoms are moderate to severe, monitoring in a veterinary hospital is often recommended

Prognosis

• Guarded to gooddepending on the pet’s size, the amount of venom, and how quickly treatment is started.

• Severe systemic reactions can cause sudden death, but many patients recover.

• Symptoms often resolve within 3–5 days, though some tortoises or turtles may take up to 2 weeks to fully return to normal.

At-Home Support During Recovery

If your chelonian has been treated for a scorpion sting:

• Provide easy access to food and shelter

• Consider bringing them indoors during recovery

• Monitor closely for changes in appetite, movement, and breathing

If you suspect your tortoise or turtle has been stung by a scorpion, contact Tree of Life Exotic Pet Medical Centerimmediately. Prompt care can be lifesaving.