How Long Are Tarantula Fangs? (Facts & Example)

Tarantulas are fascinating creatures that often capture the curiosity of many people. With their large size and intimidating appearance, they have become popular choices as pets. However, not many people are aware of the length of tarantula fangs. In this article by Wildlife Informer, the length of tarantula fangs is explored, revealing that it varies depending on the species, sex, and age. Some tarantulas have enormous fangs, while others have tiny ones. The article also explains the purpose of tarantula fangs and how they use them to inject venom into their prey. Additionally, it addresses common questions about whether tarantulas’ fangs can pierce human skin and whether tarantulas enjoy being held. Overall, this article provides a friendly and informative overview of tarantula fangs and their significance.

The Length of Tarantula Fangs

Tarantulas are known for their intimidating appearance, with their large bodies covered in hair and their prominent fangs. The length of tarantula fangs can vary depending on the species, sex, and age of the spider. It is important to understand the significance of fang length in tarantulas, as it plays a crucial role in their survival.

Variation Depending on Species, Sex, and Age

The length of tarantula fangs can vary significantly between different species. Some tarantulas have enormous fangs, while others have relatively smaller fangs. The Goliath Birdeater, which is the largest tarantula species in the world, has fangs that can reach up to 1.5 inches in length. On the other hand, some species have fangs that are much smaller.

In addition to species variation, the length of tarantula fangs can also differ between males and females. Male tarantulas typically have longer and more pronounced fangs compared to females. This is believed to be associated with the mating behavior of tarantulas, as males often use their fangs during courtship rituals and combat with other males.

Furthermore, the length of tarantula fangs can change as the spider ages. Younger tarantulas typically have shorter fangs that grow longer as they mature. This is because the fangs need to be proportional to the size of the tarantula’s body in order to be effective in capturing and immobilizing prey.

Example: The Goliath Birdeater

The Goliath Birdeater is a prime example of a tarantula species with exceptionally long fangs. As mentioned earlier, this species can have fangs that reach up to 1.5 inches in length. The Goliath Birdeater is native to the rainforests of South America and is known for its impressive size and strength. Despite its intimidating appearance, this species poses no significant threat to humans, as its venom is not lethal.

Purpose of Tarantula Fangs

Tarantula fangs serve several important purposes in the life of these spiders. Understanding the function of fangs can provide insight into how tarantulas interact with their environment and prey.

Injecting Venom into Prey

One of the primary purposes of tarantula fangs is to inject venom into their prey. Tarantulas are carnivorous predators that feed on a variety of small animals, including insects, spiders, and even small vertebrates. The venom injected through the fangs serves to immobilize and paralyze the prey, making it easier for the tarantula to consume.

Paralyzing Prey

Tarantula fangs also play a crucial role in paralyzing the tarantula’s prey. The venom injected into the prey’s body through the fangs targets the nervous system, causing paralysis. This ensures that the prey is unable to escape while the tarantula feeds on it.

Location and Structure of Fangs

Tarantula fangs are located on the bottom side of their jaws, known as chelicerae. These fangs are hollow tubes that contain venom sacs. When the tarantula feels threatened or is preparing to capture prey, it releases venom from the sacs through the fangs. The fangs are sharp and curved, allowing the tarantula to puncture the exoskeleton or skin of its prey.

Can Tarantulas’ Fangs Pierce Human Skin?

The idea of tarantula fangs piercing human skin may be a cause for concern for some individuals. However, it is important to note that most tarantulas’ fangs are too weak to penetrate human skin. Tarantulas are not typically aggressive towards humans and will not attack unless they feel threatened. In the rare cases when a tarantula bite does occur, it is usually non-fatal and comparable to a bee or wasp sting in terms of pain.

Most Tarantulas’ Fangs too Weak

The majority of tarantula species have fangs that are not strong enough to pierce through the layers of human skin. This is because tarantulas are adapted to prey on smaller animals with less robust exoskeletons. Therefore, their fangs are not developed to handle thicker and tougher human skin.

Exceptions: Tarantulas with Strong Fangs

However, there are some exceptions to this general rule. Certain species of tarantulas have fangs that are stronger and capable of piercing human skin. These species include the Brazilian wandering spider (Phoneutria) and the Asian forest tarantula (Haplopelma). While their bites can be painful and cause localized swelling, they are still not considered fatal to humans.

Non-Fatal to Humans

It is important to emphasize that, even in cases where a tarantula with strong fangs manages to bite a human, the venom is not usually lethal. Tarantula venom is primarily designed to incapacitate their small prey, and the amount of venom injected into a human is typically not enough to cause serious harm. However, it is always advisable to seek medical attention if bitten by a tarantula or any other venomous creature.

Fangs Removal During Moulting

Tarantulas undergo a process called moulting, during which their old exoskeleton is shed and replaced with a new one. This process also involves the removal and regrowth of the tarantula’s fangs.

Naturally Removed During Moulting

During moulting, the tarantula’s fangs are naturally removed along with the rest of its exoskeleton. This is because the fangs are an integral part of the exoskeleton, and the tarantula needs to shed the old fangs in order to grow new ones.

Ecdysis and Growth of New Fangs

After a tarantula has finished moulting and has shed its old exoskeleton, it begins the process of regrowing its fangs. This is known as ecdysis. The tarantula forms a new exoskeleton that includes the development of new fangs. The growth of new fangs is a gradual process that takes place over several days or weeks, depending on the species and individual tarantula.

Delicate New Fangs

During the regrowth of fangs, the tarantula’s new fangs are extremely delicate and vulnerable to damage. The tarantula must be cautious and avoid any disturbances or potential threats during this time. If the delicate new fangs were to be damaged or broken off, the tarantula may have difficulty feeding and defending itself until the fangs have fully grown and hardened.

Effects of Tarantula Bites on Humans

While most tarantula bites are not fatal to humans, they can still have various effects depending on the species and individual. It is important to note that individual reactions to tarantula bites can vary, and some people may be more sensitive or allergic to the venom.

Species Variation in Venom Effects

Different species of tarantulas possess venom with varying effects on humans. For example, the bite of an African tarantula species known as the king baboon tarantula (Pelinobius muticus) can cause hallucinations in humans. However, it is worth noting that such severe effects are rare, and the majority of tarantula bites do not result in hallucinations or other severe symptoms.

Examples: Hallucinations and Muscle Cramps

Certain tarantula bites, such as those of the genus Poecilotheria, have been reported to cause muscle cramps in humans. These effects are generally not life-threatening and tend to subside over time. It is essential to seek medical attention if bitten by a tarantula to ensure proper treatment and alleviate any potential discomfort.

Most Bites Not as Painful as Wasp Sting

In general, the pain caused by a tarantula bite is often described as being less intense than that of a wasp sting. While the initial bite may cause some discomfort, the pain usually subsides relatively quickly. However, individual experiences can vary, and some individuals may have a higher pain tolerance or be more sensitive to the venom.

Handling Tarantulas and their Response

Tarantulas are a popular choice for exotic pets due to their unique appearance and relatively low maintenance requirements. While they may not be cuddly or affectionate like traditional pets, they can still exhibit responsive behavior towards their owners.

Tarantulas as Popular Exotic Pets

Many people find tarantulas fascinating and choose to keep them as exotic pets. Their long lifespan in captivity, which can reach up to 20 years, makes them an attractive choice for individuals looking for a long-term commitment. Tarantulas are relatively easy to care for, requiring minimal space and simple environmental setups compared to other pets.

Long Lifespan in Captivity

Tarantulas can live for many years in captivity if given the proper care and conditions. This longevity allows owners to develop a bond and observe the tarantula’s behavior over an extended period. While tarantulas may not show affection in the same way that dogs or cats do, they can recognize their owners and respond to their presence.

Non-Cuddly but Responsive to Owners

Tarantulas are not considered cuddly pets due to their nature as solitary and independent creatures. However, they can still respond to their owners in subtle ways. For example, tarantulas may exhibit different behavior, such as crawling on their owners’ arms or displaying certain body language to indicate comfort or discomfort.

Not Recommended to Pick Up Wild Tarantulas

It is important to note that handling wild tarantulas is not recommended. Wild tarantulas perceive any attempt to pick them up as a threat and may defend themselves by flicking urticating hairs. These hairs can cause itching or allergies when they come into contact with human skin. Instead, it is best to observe tarantulas in their natural habitats or interact with captive-bred individuals that are accustomed to human presence.

Five Most Common Tarantula Pets

For those interested in keeping tarantulas as pets, there are several popular species to consider. These tarantulas are well-suited for captivity and can provide enthusiasts with an opportunity to observe and interact with these fascinating creatures.

1. Mexican Red Knee

The Mexican Red Knee tarantula (Brachypelma smithi) is one of the most popular pet tarantulas. These tarantulas have a relatively small body size, with the largest species reaching about 5 inches in length. They are known for their bright red legs and body, which make them visually striking. Mexican Red Knee tarantulas are native to Mexico and inhabit desert regions. They are generally not aggressive towards humans unless provoked and make excellent pets for beginners.

2. Arizona Blonde

The Arizona Blonde tarantula (Aphonopelma chalcodes) is another popular choice for tarantula enthusiasts. These tarantulas are native to the desert southwest region of the United States, including Arizona, New Mexico, and Texas. They are typically characterized by their blonde coloration, which gives them their name. Arizona Blonde tarantulas are docile and solitary creatures, making them suitable pets for beginners.

3. Antilles Pink Toe

The Antilles Pink Toe tarantula (Caribena versicolor) is a visually stunning species that is highly sought after in the tarantula pet trade. They are native to the Caribbean islands of Martinique and Guadeloupe. As juveniles, these tarantulas have blue hairs on their bodies, which gradually change color as they mature. Their legs turn black with pink, brown, and red layers. Antilles Pink Toe tarantulas are medium-sized, with leg spans ranging from 3 to 4 inches. They are relatively low-maintenance and are considered a good choice for beginner tarantula keepers.

4. Brazilian Black

The Brazilian Black tarantula (Grammostola pulchra) is known for its stunning black coloration and calm demeanor. It is a large tarantula species with adults reaching leg spans of up to 6 inches. Brazilian Black tarantulas have a velvety-black appearance with grayish highlights in certain lighting conditions. They are considered relatively docile and are often recommended for beginner tarantula keepers. Females of this species have a long lifespan in captivity, with some individuals living up to 20 years.

5. Chilean Rose

The Chilean Rose tarantula (Grammostola rosea) is a popular choice for tarantula enthusiasts for several reasons. These tarantulas are known for their calm and docile nature. They move slowly and are relatively easy to care for. Chilean Rose tarantulas are native to Chile and other parts of South America. They have a black to brown body coloration with reddish-orange or pink hair on their abdomen, similar to the appearance of rose flowers. Females of this species can reach leg spans of up to 5 inches and have a lifespan of up to 20 years in captivity.


In conclusion, the length of tarantula fangs can vary depending on the species, sex, and age of the spider. Fangs play a vital role in the tarantula’s survival, allowing them to inject venom into their prey and paralyze them. It is important to note that most tarantulas’ fangs are not strong enough to pierce human skin, and their bites are generally non-fatal. During molting, tarantulas naturally shed their fangs and regrow them, and it is crucial to avoid disturbing them during this delicate process. Tarantula bites can have varying effects on humans, but severe symptoms are generally rare. Tarantulas can make fascinating exotic pets, although they are not cuddly, they can exhibit responsive behavior towards their owners. Lastly, there are several popular tarantula species that are commonly kept as pets, offering enthusiasts a chance to observe and appreciate these unique creatures.

Disclaimer and About Wildlife Informer

This article is provided by Wildlife Informer, a leading source of information and resources on wildlife and exotic pets. The content presented in this article is for informational purposes only and should not be considered as professional advice. It is always advisable to consult with experts or professionals before making any decisions regarding the care or handling of tarantulas or any other animals. Wildlife Informer does not endorse or promote the handling or ownership of wild animals and encourages responsible pet ownership.

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