Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

First Aid & Emergencies

Font Size

Poisonous Lizards - Topic Overview

The Gila monster camera.gif and the Mexican beaded lizard camera.gif are two types of poisonous (venomous) lizards found in North America. These large, thick-bodied lizards have short, stubby limbs. They live in desert regions of the southwestern United States and northern Mexico.

Poisonous lizards do not generally bite unless they are handled. Lizards bite with teeth rather than fangs. Venom enters the bite wound by dripping down grooves in the teeth rather than being injected through fangs, as it is with poisonous snakes. Lizards tend to hang on to their victims, making them hard to remove once they have bitten. Dry bites, in which no venom is released, may occur. But lizard bites are less likely to be dry than are snakebites.

The force of the jaws of a lizard can cause a crushing, or compression, injury. These injuries can cause severe swelling and may damage underlying tissues, blood vessels, nerves, joints, or bones. The force may cause the skin to split open or scrape off. Tissue may be damaged either from the bite itself or from attempts to remove the lizard.

Symptoms at the site of a poisonous lizard bite may include:

  • Moderate to severe bleeding.
  • Throbbing or burning pain.
  • Swelling that gradually gets worse over several hours.
  • Teeth left in the wound.

More general symptoms may include:

If you think you have been bitten by a poisonous lizard, call911or other emergency services immediately.

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
    Next Article:

    Today on WebMD

    Antibiotic on hand
    3d scan of fractured skull
    Father putting ointment on boy's face
    Person taking food from oven
    sniffling child
    wound care true or false
    caring for wounds
    Harvest mite

    Pollen counts, treatment tips, and more.

    It's nothing to sneeze at.

    Loading ...

    Sending your email...

    This feature is temporarily unavailable. Please try again later.


    Now check your email account on your mobile phone to download your new app.

    WebMD the app

    Get first aid information. Whenever. Wherever... with your iPhone, iPad or Android.

    Find Out More