What's a Tarantula? A tarantula is a hairy spider that is part of the arachnid family, which also includes mites, ticks, and scorpions. Tarantulas are found all over the world and can grow up to 5 inches long, but those found in the United States are usually about 2 to 3 inches long (about the length of a crayon). Tarantulas can be black, brown, gray, or even brightly colored. Most people are afraid of tarantulas because they are so large and weird-looking, but the truth is that these spiders are not dangerous. They live in nests in the ground and are pretty timid, avoiding people whenever they can. What a Bite Looks and Feels Like If a person gets bitten by a tarantula, the bite will probably feel a lot like a bee sting, with pain in the area of the bite. It will look like a bee sting, too, with redness and some swelling. Because the tarantula's venom (poison) is weak, it's unusual to have more severe reactions involving other parts of the body. What You Should Do If you think you've been bitten by a tarantula, wash the bite with soap and water. If the bite hurts a lot, you can ask an adult for some pain medication. Placing an ice pack on the bite can also help. What a Doctor Will Do Allergic reactions to a tarantula's bite are unusual. But just like some people have allergic reactions to bee stings (like trouble breathing or feeling sick), some people may have allergic reactions to tarantula bites. If a doctor suspects that someone is allergic to a tarantula bite, he or she will treat the person with medicine to fight this reaction. How to Avoid Getting Bitten If you come across a tarantula, don't bother it or try to play with it. These spiders will not bite you unless they feel threatened — if you leave them alone, they will leave you alone. Back to Articles Related Articles Hey! A Fire Ant Stung Me! Fire ants think they're hot stuff. Learn how to handle them in this article for kids. Read More Hey! A Scorpion Stung Me! Scorpions are about three inches long (about the length of a crayon), with eight legs and a small pair of claws that look like crabs' claws. Read all about them. Read More Hey! A Black Widow Spider Bit Me! The black widow spider is one of six poisonous kinds of spiders in the United States. Learn more about them! Read More Hey! A Brown Recluse Spider Bit Me! The brown recluse spider is one of six poisonous kinds of spiders in the United States. Learn more about the brown recluse spider. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.