The Enormous Arachnid: Discovering the World’s Largest Spider Species

The world’s largest spider is a fascinating creature that captures the attention of many. With its impressive size and unique characteristics, this arachnid has become a source of wonder for both scientists and nature enthusiasts alike.

Meet the Biggest Spider in the World

The biggest spider in the world is known as the Goliath bird-eating spider. This spider belongs to the tarantula family and is found in South America, specifically in the rainforests of Brazil, Venezuela, and Suriname. The Goliath bird-eating spider is a massive arachnid that can grow up to 30 centimeters (12 inches) long with a leg span of up to 28 centimeters (11 inches). Despite its name, this spider does not exclusively eat birds, but it will consume any animal it can overpower.

Physical Characteristics

The Goliath bird-eating spider has several physical characteristics that make it stand out from other spiders. Its body is covered with brown or black hair and has a thick exoskeleton for protection. It also has large fangs that are capable of piercing through human skin. The spider’s legs are muscular and covered with spines that help it climb trees and other surfaces.


Goliath bird-eating spiders are primarily nocturnal creatures that spend their days hidden away in burrows they dig themselves. They come out at night to hunt for prey such as insects, rodents, lizards, and even small birds. These spiders do not spin webs like other spiders but instead rely on their speed and strength to catch their prey. When threatened, they will rear up on their hind legs and show off their fangs in an attempt to intimidate predators.

Discover How Big the Biggest Spider in the World Can Grow

The size of the biggest spider in the world is impressive. The Goliath bird-eating spider can grow up to 30 centimeters (12 inches) long with a leg span of up to 28 centimeters (11 inches). This makes it one of the largest spiders in the world. The female Goliath bird-eating spider is typically larger than the male, and they can live up to 25 years in captivity.

Growth Process

The growth process of the Goliath bird-eating spider is slow, and it takes several years for them to reach their full size. After hatching from an egg sac, the spiderlings will molt several times before reaching maturity. During each molt, they shed their exoskeleton and grow a new one that is larger than the previous one. This process continues until they reach adulthood.

Size Comparison

The Goliath bird-eating spider is not only bigger than other spiders but also larger than many small animals. For example, its leg span is longer than a dinner plate, making it an intimidating sight for anyone who encounters it. Its massive size has also made it a popular attraction in zoos around the world.

Where to Find the Biggest Spider in the World

The biggest spider in the world, the Goliath bird-eating spider, can be found in South America’s rainforests. Specifically, they are found in Brazil, Venezuela, and Suriname. They prefer warm and humid environments where there is plenty of food available for them to hunt.


Goliath bird-eating spiders live in burrows that they dig themselves or find abandoned by other animals such as rodents or armadillos. These burrows provide protection from predators and shelter from extreme weather conditions such as heavy rain or extreme heat.

Zoo Exhibits

If you’re interested in seeing a Goliath bird-eating spider up close but don’t want to travel to South America, many zoos around the world have exhibits featuring these spiders. Zoos provide a safe environment for visitors to observe these spiders without putting themselves in danger.

Encounters in the Wild

While encountering a Goliath bird-eating spider in the wild is rare, it can happen if you’re trekking through the rainforest. If you do come across one, it’s best to keep your distance and not disturb it. These spiders are not aggressive towards humans but will defend themselves if they feel threatened.

The Prey of the Biggest Spider in the World

The biggest spider in the world, the Goliath bird-eating spider, is an opportunistic predator that will consume any animal it can overpower. While its name suggests that it exclusively eats birds, this is not entirely accurate as they also eat insects, rodents, lizards, and even small mammals such as bats.

Hunting Techniques

Goliath bird-eating spiders do not spin webs like other spiders but instead rely on their speed and strength to catch their prey. They are ambush predators that wait for their prey to come within striking distance before attacking. Their large size and muscular legs allow them to overpower animals much larger than themselves.

Digestion Process

After capturing its prey, the Goliath bird-eating spider injects it with venom from its fangs. The venom immobilizes the prey and helps break down its internal organs so that they can be easily consumed by the spider. Once consumed, digestion occurs outside of the spider’s body inside its stomach lining.

Protecting Yourself from Encounters with the Biggest Spider in the World

If you’re planning on visiting areas where Goliath bird-eating spiders are found, it’s essential to take precautions to protect yourself from encounters with these spiders. While they are not aggressive towards humans, they will defend themselves if they feel threatened.

Wear Protective Clothing

  • Wear long-sleeved shirts and pants to cover your skin and protect yourself from spider bites.
  • Wear closed-toe shoes or boots to protect your feet from spider bites.
  • Avoid wearing sandals or flip-flops that leave your feet exposed.

Avoid Disturbing Spider Burrows

  • Avoid walking through areas where you see spider burrows as this may disturb the spiders and cause them to attack.
  • If you need to walk through an area with spider burrows, do so slowly and carefully, watching where you step.

Use a Flashlight at Night

  • Goliath bird-eating spiders are nocturnal creatures and come out at night to hunt for prey. Use a flashlight when walking at night to avoid accidentally stepping on a spider or disturbing its burrow.

Seek Medical Attention for Bites

  • If you are bitten by a Goliath bird-eating spider, seek medical attention immediately. While their venom is not lethal to humans, it can cause severe pain and swelling.
  • Do not attempt to treat the bite yourself as this can lead to complications.

In conclusion, the biggest spider in the world is a fascinating and awe-inspiring creature that continues to captivate and intrigue people around the globe. While it may be intimidating due to its size, it plays an important role in maintaining the balance of ecosystems and should be respected and protected.


Does the Goliath birdeater bite humans?

Despite having venomous inch-long fangs, the Goliath Birdeater’s bite is not fatal to humans. However, it can cause significant pain, described as being similar to a wasp sting or the sensation of hammering a nail into your hand.

What is the deadliest spider?

The Sydney funnel-web spider, also known as Atrax robustus, is considered the most harmful spider to humans by the Guinness World Records. This venomous spider is found in wet environments such as gardens or under logs and is native to Australia.

What spider has the worst venom?

The Australian funnel-web spiders, which include the Hexathelidae, Atracidae, Macrothelidae, and Porrhothelidae families, are known for their highly toxic venom. The Sydney funnel-web spider, Atrax robustus, is a type of mygalomorph spider that is often considered one of the most poisonous spiders in the world. It should not be confused with the araneomorph funnel-weaver or grass spiders.

What is the smallest spider?

Patu digua is a remarkable species belonging to the Symphytognathidae family. The male of this species is incredibly small, measuring just 0.43mm, which makes it the smallest known species of spider.

Can a tarantula hurt a person?

Being bitten by a tarantula can result in pain at the bite location that is similar to a bee sting, with potential redness and warmth. If the spider feels threatened, it will rub its hind legs against its body and release many small hairs toward the perceived danger.

Why do Australia have so many spiders?

Lowe suggests that the reason for the spiders’ larger size in urban areas may be due to the urban heat-island effect and the availability of prey. Invertebrates tend to grow larger in warmer temperatures, and they are highly sensitive to changes in temperature. Additionally, urbanization may offer various benefits to these spiders, according to Lowe.

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