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Are Tarantula Bites Dangerous?

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Shaddie is an arachnid enthusiast who hopes to combat society's widespread disdain for spiders through education.

A closeup of this tarantula's fangs reveals the holes through which the venom is injected.

A closeup of this tarantula's fangs reveals the holes through which the venom is injected.

Tarantulas as Pets: Are Tarantulas Dangerous?

Tarantulas are fuzzy arachnids most notable for their large size and hairy appearance. There are over 850 different kinds of tarantula spread across nearly every continent. Terrestrial tarantulas burrow in the earth and spend their time on the ground, while arboreal tarantulas live in trees and make cocoon-like nests out of silk, rarely touching the forest floor.

The popularity of tarantulas as pets has grown in the past few decades, and why not? They are a noiseless creature with minimal care requirements, and many tolerate handling. As the need for smaller living spaces and busier work schedules increases, tarantulas have become perfect apartment companions.

Pet spiders require very little space and are easy to house and feed. You can find tarantulas at pet stores, reptile shows, and from breeders and dealers online. For those seeking a unique, undemanding pet, a tarantula is a fine choice.

As with any animal you purchase, there are certain cautions to consider when getting a tarantula. Cats may scratch, birds may bite, lizards may whip their tails, and even frogs are capable of releasing unpleasant secretions that can irritate your eyes should you rub them after handling. Tarantulas are no different from other animals in that respect. They have their limits, they have their reasons, and some may defend themselves if they feel it is necessary to do so.

Brachypelma smithi kicking up hairs

Brachypelma smithi kicking up hairs

When Tarantulas Get Scared

A tarantula’s first act of defense is to scurry away from the danger in a flurry of little hairy legs. If this doesn’t work, many will actually flick hairs at their attacker. A tarantula accomplishes this peculiar feat by using one of its back legs to repeatedly rub its abdomen and shake loose the guard hairs that coat it. Because of the vigorous rubbing and the gossamer quality of the shafts, these urticating hairs become airborne in the intended direction of the enemy.

This defense is enough to discourage most predators because the hair is extremely itchy to sensitive areas of the skin. In humans, these hairs can cause an irritating rash, and if a witless person were to rub the hairs in their eyes for some reason, they would need to seek medical treatment immediately.

But when it comes to spiders, everyone seems interested in only one thing: the bite. Which one has the most dangerous bite? Where do the most dangerous spiders live? How can I tell the difference between a brown recluse and a garden spider? How long can I live if I'm bitten in the eye by a black widow?

Sensationalist media and fear-mongering members of society who are content to spread misinformation and panic seem to enjoy nothing more than to talk about the potential eight-legged horrors that could be lurking just outside your front door, all the while simultaneously ignoring scientific data and simple facts.

This does NOT mean "I want a hug!"

This does NOT mean "I want a hug!"

Tarantula Bites: Fact and Fiction

The thought process in the minds of most people is that if something as small as a black widow or brown recluse can rack up the death toll in the United States, then surely a South American jungle spider that is twice, thrice, or even ten times as large would have an even more potent bite to correspond with their greater mass! But fortunately, this is not the case.

The size of many tarantulas is daunting to fearful onlookers, but in actuality, tarantulas have fairly weak venom, and those bought in pet stores do not pose a threat to human safety. In fact, there is not a single documented case of a tarantula killing a human being, even among the most dangerous tarantulas in the world.

Like most animals, tarantulas will give a warning before actually attacking. If they feel they are unable to escape, typically, a tarantula will raise its front pairs of legs and show its fangs, or it may lunge aggressively toward your hand. This is the tarantula saying, "Back off, buster, I'm not in the mood right now!" But if this posture does not discourage an assailant, it may strike. So if you see your spider acting in this manner, it would be wise to give the little crankypants its space.

The tarantula does have a venomous bite, just as all spiders do, but its venom is designed to take down prey much smaller than you or me. The bite of most tarantulas is similar to that of a wasp sting, where redness, soreness, and inflammation of the bite location will occur. In the case of very large tarantulas, the mechanical puncture of their fangs into human skin may produce a minimal amount of blood, which will heal just as pinpricks do. (The tarantula may sink both fangs in during a bite, or only one.)

The other symptoms fade in a few days, and it is quite rare if any other side effects are experienced (obviously not accounting for possibly serious allergic reactions, which affect approximately 2% of people when stung by bees).

Tarantulas are capable of "dry biting." A dry bite is one where an attack and a successful puncture occurs, but no venom is injected. The result is one or two holes in the skin, but no other side effect. It is just that. A "dry" bite!

Some tarantulas are more likely to dry-bite than others, but it depends on each individual and what they personally feel is worth losing venom over. Some, it seems, simply don't want to waste their reserves if they don't plan on eating (venom is crucial to the tarantula's digestion process when dining on prey).

Some spiders, like this Avicularia, can be quite jumpy when held.

Some spiders, like this Avicularia, can be quite jumpy when held.

Tarantula-Handling Tips and Precautions

Tarantulas typically don't want to start trouble (unless you happen to buy a species that is renowned for its aggression), but let's touch on some precautions you can follow which could help you avoid bites. You should always use caution when handling your spider. Tarantulas are big babies and could easily become startled from sudden movements, large vibrations, changes in lighting, or even airflow (never blow or breathe directly on a tarantula!).

When animals get scared, the "fight or flight response" occurs in their brain, and they choose one or the other. Even if the thing that scares them is not you, you may find yourself the receiver of a nervous nip, similar to the way that birds may bite on to your hand if they fear they may fall to their death.

How to Safely Pick Up a Tarantula

The safest way to approach a spider is by being slow, quiet, and calm. It is wise to have a tool at your disposal (I prefer reptile feeding tongs, but paintbrushes work as well) which you will use to "test" the amiability of your spider before you attempt to engage it. Gently nudging the spider's abdomen or legs with your tool of choice, note the behavior that follows.

If the spider turns around swiftly, rears up, or bites the tool (you will feel a hard "scrape" and may hear a noise as the fangs contact the object), the tarantula is probably not in the mood to play. If the spider is slow to respond, turns around but makes no other movement, or simply sits there, it is generally safe to continue.

Before handling any of my spiders, I test them with this method. I then coax them out by gently prodding their rumps and goading them forward until I can get them to walk onto my hand.

Please note that if you regularly feed your tarantula with tongs, they will associate tongs with food and will leap hungrily at them with fangs out, whether they are willing to be held or not.

How to Safely Hold a Tarantula

Always make sure the spider has all legs supported when you hold them. Some tarantulas like to crawl—a lot—so just keep switching out hands so the spider can move across them. It is recommended to keep a tarantula on your hands only unless you are quite confident in yourself and the behavior of your own spider, in which case it may be all right to allow the spider to roam elsewhere.

Remember to hold the tarantula over a surface or while sitting down. If a tarantula falls from a height of just three feet, the impact could break the poor spider's abdomen apart, which could lead to instant or painfully slow death. If you are hesitant about handling your tarantula, it's best to refrain from doing so.

The fangs of many species can be quite large.

The fangs of many species can be quite large.

When a Bite Occurs

In the unlucky event that you are bitten by your tarantula, hastily clean the wound with hot water and soap. In most cases, the bite may be uncomfortable for a few hours, and it may remain itchy for up to a week, but this is normal and is the body's natural response toward recovery.

Cold compresses are often recommended for bee stings, and over-the-counter pain relievers such as Ibuprofen have proven to reduce some discomfort. There are some individuals who swear by the method of running bite sites under scalding water, the heat of which is said to help neutralize or inhibit the spread of venom. Medical evaluation is rarely necessary for a tarantula bite incident


Anaphylactic shock can occur when certain proteins in animal venom spark a severe reaction from the body, causing a flood of histamines and other inflammation-inducing cells to surge through the bloodstream. This causes inflammation of the skin, constriction of airways, and even cardiac arrest in severe cases.

Allergies to bees and wasps are typically very rare, but since the venom of wasps, in particular, is similar to that of tarantulas, it is safe to assume that anyone allergic to bees could be allergic to spiders and should probably avoid tarantulas as pets.

This person is gently "pinching" a spider to show off its fangs.

This person is gently "pinching" a spider to show off its fangs.

When Is Hospitalization Wise?

As mentioned above, mild itchy symptoms are normal. But, if you feel trouble brewing in places other than the localized area of your bite wound, be on the alert. Symptoms to look out for:

  • Nausea
  • Dizziness
  • Increased heart rate
  • Aches in the joints or limbs

If your mild symptoms continue for longer than a week, or the itchiness and redness spreads, this may also be cause for concern. If you are bitten and are afraid you may be having an allergic reaction, or the venom is having a potent effect on you, make sure you receive medical attention as soon as possible.

The good thing about pet tarantula bites is that identification of the culprit is confirmed (identification is paramount with antivenin treatment). Unfortunately, this knowledge is relatively useless seeing as how there is no tarantula antivenin available anyway. This is because tarantula bites are typically nothing to worry about and are not common. However, in the case of more potent species of tarantulas (ones you are not likely to find in pet stores), some bites may require hospitalization, if only to acquire pain medication.

The docile Grammostola pulchra makes an excellent first-time tarantula.

The docile Grammostola pulchra makes an excellent first-time tarantula.

The rose-hair tarantula is one of the most popular arachnid pet species due to its docile nature.

The rose-hair tarantula is one of the most popular arachnid pet species due to its docile nature.

Types of Tarantulas and Their Bite Reports

Rose-Hair Tarantulas

These are the most commonly kept tarantulas, and the most commonly found in pet stores. Though they are marketed as being the friendliest of all tarantulas, they actually can cop quite the attitude in comparison to some other more docile species (such as Grammostola pulchra). But rose-hairs are known for their harmless bites which cause mild symptoms that fade within a few days. Least concern.

Pink-toe tarantulas are known for their unique coloration.

Pink-toe tarantulas are known for their unique coloration.

Pink-Toe Tarantulas

This is another common tarantula that can be located at nearly any Petco. They are very unwilling to bite, and when they do bite the symptoms are minimal. "No worse than a bee sting" is the adage that you will hear from the privileged few who have experience with the bites of this species. These spiders also do not kick hairs. Least concern.

Mexican red-knee tarantulas are named for the reddish-orange coloration on portions of their legs.

Mexican red-knee tarantulas are named for the reddish-orange coloration on portions of their legs.

Mexican Red-Knee Tarantulas

Another common tarantula found in pet stores, with similar bite results as the two species listed above. Simple, non-damaging, easy to live with. The real concern with these guys is their love of kicking hairs. Their hairs are itchier than those of other tarantulas. Least concern.

Bird-eating tarantulas are among the largest spiders in the world!

Bird-eating tarantulas are among the largest spiders in the world!

Bird-Eating Tarantulas

These tarantulas are the largest spiders in the world, but the symptoms from their bites are no worse than those from the species listed above, with the only difference being the mechanical pain resulting from this spider's large fangs piercing the skin during an attack. Theraphosa blondi can attain fangs approximately 1 inch long. Pain, though it can be sharp, lasts no longer than a few days and is not usually anything to be medically concerned about. Some concern.

King baboon tarantulas are another species commonly seen in the pet trade.

King baboon tarantulas are another species commonly seen in the pet trade.

King Baboon Tarantulas

Bite reports for this species vary and can be as innocuous as mild pain and slight bruising at the bite wound, to nausea, fever, and muscle cramping in the affected limb. One case even documented a hallucinatory episode. Some people seem to be much more sensitive to the venom than others.

It is also plausible that the amount of venom being injected by each individual spider differs in big or small ways, which may account for the gradient of severity. Fortunately for the safety of irresponsible impulse buyers everywhere, this spider is not sold in stores. Some concern to high concern.

Ornamental tarantulas are generally kept only by more experiences pet owners.

Ornamental tarantulas are generally kept only by more experiences pet owners.

Ornamental Tarantulas

Poecilotheria is a genus of very attractive tarantulas which include the Indian ornamental, fringed ornamental, gooty sapphire, and many more. These are not spiders you will find in your everyday pet store, and for good reason. Though not terribly aggressive, they are impeccably fast and will not hesitate to bite if they feel cornered.

Their venom is arguably among the most potent of all tarantulas kept as pets, with reports typically including nausea, vomiting, and severe muscle cramping. Increased heart-rate can also occur at random intervals, as can fever, dizziness, and body aches. When bitten by these animals, most people will visit the hospital for muscle relaxants, analgesics, or cautionary monitoring. This is not a spider for beginners! Most concern.

Bite Risk by Species

Rose Hair

Least concern

Pink Toe

Least concern

Mexican Red Knee

Least concern


Some concern

King Baboon

More concern


Most concern

Tarantulas really are more afraid of you than you are of them!

Tarantulas really are more afraid of you than you are of them!

In General, Tarantula Bites Aren't That Bad

Tarantulas as a whole should be treated with respect, not fear. They may bite to defend themselves on occasion, but unless you own a particular group of tarantulas with reportedly potent venom, even if you are tagged, you have little or nothing to stress over. Many people have been in the business of tarantula keeping and breeding for decades without getting nicked once. Bites shouldn't be dreaded; they are a very small part of animal care in general.

So if you are concerned about buying your child a tarantula or nervous about getting one for yourself, just know that the worst you or your kid will ever feel if bit by one typically found in pet stores is the initial surprise of the attack. Assuming you are not allergic, effects are not long lasting, and the minimal pain will subside. I promise. It's no worse than a bee sting.

More About Tarantula Bites

This article is accurate and true to the best of the author’s knowledge. It is not meant to substitute for diagnosis, prognosis, treatment, prescription, or formal and individualized advice from a veterinary medical professional. Animals exhibiting signs and symptoms of distress should be seen by a veterinarian immediately.


Brooke on June 18, 2019:

Do you know what it means when holding a terantula and they vibrate their fangs on your finger but not actually bite?

Jack on January 14, 2015:

You're always on top of evhyetring.Ok, my MAC doesn't wanna open the conversation thingy on the above post so I can't leave a comment but you know I'm thinking about you and the boys. What a heart-warming post. You've raised good boys, Viv.PS. I tried Cindy's line. It was ok. But I liked my Arbonne better so I cancelled it and went back to my ol' faithful. =/

Anna on January 10, 2015:

Everything you mentioned are execeienrps that are not really sinful. If you wanna know what a spider bite feels like, there's really nothing wrong with it. I'd think you're out of your tree, but I'd ask that you just make sure you won't have some kind of heart-stopping allergic reaction, the proper medical preparedness, and then have fun! Want want a lady in high heels to score three points on your crotch? You could have your sister or mom do that. Nothing sinful there.Unmarried sex is the only no-no. You're missing the point on something. Sin is not fun and games like we think it is. It's actually dressed up puke. Do you think hell is about spider bites and getting kicked in the nuts? You need to rethink that. It's more like endless starvation, grief, sadness, hate, anger, torture, and suffering that goes on and on and never stops. It's like being force-fed your own puke and never ever getting a break. And my descriptions don't even touch what its really like.So then, doesn't heaven sound much better?God bless.References : I am catholic.

Phillip Grobler from Polokwane on July 01, 2014:

Very nice informative hub, though the OBT (Orange Baboon Tarantula) here in South Africa have enough venom to kill kids under the age of 6 some reported 8 year old, i self have been bitten a few times and the effects is epic.blurry vision, epic muscle cramps at times the effects range, sometimes its just bad head aches and other times as described above. This is an old age Tarantula super aggressive but you can't tame them if you put the time and effort into it, then they do make really amazing pets. +up+useful+interesting.

Gable Rhoads from North Dakota on April 28, 2013:

I love tarantulas and own a rose hair right now. Thanks for writing this hub and educating people.

Dana Stamps from Wichita, Kansas on March 05, 2013:

I would love to have another Pink Toe! I just loved that tarantula. Her name was 'Stella'. Lol! She had such an intricate tube web! I would spray mist her enclosure, and she loved meal worms as well as crickets. Both of my females lived a long time! When I originally got my Pink Toe, she was in such bad shape. I got her from a pet store here in my area. Her abdomen was really small and narrow. Right after I got her home, I got a plastic lid and filled it with water and set it on my floor for her to drink. She drank for probably about 15 minutes! Bless her heart! She turned into a beautiful tarantula! However, one time she laid eggs and made an egg sack. I didn't want the eggs to be viable and hatch. I know that sounds cruel, but I took her egg sack away. Sometimes they can reproduce asexually. It's very possible that the eggs were not viable, but she fought me on taking it away. I felt so bad about it, and I still do. Stella was a sweetheart, and she loved to jump. She was a big girl! She grew after I had nursed her back to health. Another time, she was gravid, but didn't actually lay the eggs. She had a tree branch and sphagnum moss in her enclosure, and she came out all of the time. I always made sure to keep her enclosure more humid than her burrowing friends. I used my spray bottle that I kept full of water.

My Rose Hair lived into her teens, and she loved to come out, too. She even made a shallow burrow in her vermiculite one time!

My male curly hair tarantula lived about two years after he sexually matured. He was a sweetheart, too. He lived a long time for a male tarantula! I used to take him out, too.

I'm really going to look into getting another one. I need to figure out where I can buy one here in town. They're so easy to care for, and they do so many interesting things.

I bet your tarantula, A. versicolor, is beautiful! I'll have to look up the Brazilian black tarantula. They sound so interesting, and I bet they all have their own personalities. They all sound so happy. It sounds like you've given them all a good home, one that they are sure to enjoy for many more years to come!

It's nice to find another tarantula enthusiast! I'm just a huge lover of animals!

Shaddie (author) from Washington state on March 05, 2013:

I'm glad to hear that a fellow tarantula enthusiast could gain some more insight on them from my Hub! They really are fascinating creatures. At the moment I have an A. avicularia (pink toe), an A. versicolor (Antilles pink toe), a G. rosea (rose hair) and a G. pulchra (Brazilian black), so I've gotten the pleasure of watching both arboreal and terrestrial behaviors from the bunch. One of the most interesting things I've ever seen them do is drink (I never get tired of seeing spiders drink), and "tapping" to one another across the glass of their aquariums. Pink toes are beautiful, if you're able, you should definitely get another! :)

Dana Stamps from Wichita, Kansas on March 05, 2013:

I love this article! I am a tarantula lover and have owned tarantulas in the past, 5 total. Mine never bit me, and I handled them quite frequently, but as you have stated in your article, these animals can bite. The most aggressive behavior mine ever showed, was rearing up on their back legs! I knew to back off! There are so many beautiful species. I have several tarantula books, and I have been thinking about getting another one. I have my old tarantula enclosures, most of them suitable for burrowing species, but I did have a South American Pink Toe female (arboreal) that lived quite a long time! She had a taller enclosure with a branch in it. She was so beautiful and so sweet. I miss all of my fuzzy spider friends. Thanks for the information on tarantula bites. This was something I was not very educated on, but now I know. :~)

Shaddie (author) from Washington state on November 25, 2012:

It is pretty isn't it? It's one if the backgrounds on my computer. As for bonding, I can't say I know enough about all tarantulas to know if any of them bond, or feel emotions at all. Simple-minded animals such as arthropods have very specific desires, and I'm not sure if companionship is one of those desires. I haven't noticed that my spiders act any different around me or other people, so I can't imagine they recognize faces or smells.

Some people think that because spiders don't "miss you" or don't connect with you on an emotional level it makes them less of an animal and pet, but I see it as an advantage. Spiders don't suffer from the neglect, boredom, or loneliness that a bird or mammal would when left alone for days.

At any rate, tarantulas can be accustomed to handling, and some become tame enough for you to pick up, roll over, "tickle," etc.

An AYM on November 25, 2012:

Do tarantulas bond with people? Also that first picture is very, very pretty to look at.

Shaddie (author) from Washington state on March 20, 2012:

Why thank you! Yes, tarantulas have gotten quite a bad rap it seems, and for little reason. I'm glad this could help put your mind at ease.

geetika iyer from India on March 20, 2012:

Loved the hub! You have managed to wash away all the wrong images I had about trantulas(thanks to movies and such). They really are some of the most peaceful and harmless creatures after all.

And yes i did not know that there is not even a single documental case of death due to trantula bite! The thought to check never even occurred to me.

Love your hubs!