10 Amazing Tarantula Facts You Need to Know
Tarantulas, with their impressive size and often intimidating appearance, have captivated and sometimes frightened humans for centuries. These fascinating arachnids, belonging to the Theraphosidae family, are a diverse group of spiders found in various habitats around the globe. Beyond their visual appeal, tarantulas possess a wealth of intriguing characteristics, behaviors, and adaptations that make them a compelling subject of study. This article delves into ten amazing facts about tarantulas, shedding light on their unique qualities and dispelling common misconceptions. From their physical attributes and dietary habits to their lifespans and interactions with humans, we’ll explore what makes these spiders so remarkable. Prepare to be amazed by the world of tarantulas!
Tarantula Fact 1 What Exactly Is a Tarantula
Tarantulas are large, hairy spiders belonging to the Theraphosidae family. They are characterized by their size, with some species having leg spans exceeding 10 inches. Unlike many other spiders, tarantulas are generally not considered to be highly venomous to humans, although their bite can be painful. They are primarily terrestrial, meaning they live on the ground or in burrows. Their bodies are divided into two main parts: the cephalothorax (fused head and thorax) and the abdomen. They have eight legs, eight eyes (though their vision is not their strongest sense), and two fang-like chelicerae used for injecting venom. Tarantulas are found on every continent except Antarctica and play a vital role in their ecosystems, primarily as predators of insects and small animals. The name tarantula is often used interchangeably with the term ‘bird-eating spider’ which is a slight misnomer, as they rarely eat birds.
Tarantula Fact 2 The Size of Tarantulas

One of the most striking features of tarantulas is their size. While the average tarantula is larger than most spiders, there’s a wide range of sizes among the different species. The Goliath birdeater (Theraphosa blondi) is the largest, with a leg span that can reach over 12 inches, and a body length of up to 4 inches. In contrast, some dwarf tarantula species are much smaller, with leg spans of only a few inches. Their size is often correlated with their habitat and diet. Larger tarantulas typically inhabit areas where they can find larger prey, while smaller species may be found in more confined environments. Their size is also affected by their age, with tarantulas continuing to grow throughout their lives, molting their exoskeletons periodically to accommodate their growth. The size of a tarantula is therefore dependent on the species and age.
Tarantula Fact 3 Where Do Tarantulas Live
Tarantulas are found in a variety of habitats across the globe. They are primarily located in tropical and subtropical regions, but can also be found in temperate climates. Their preferred environments include rainforests, grasslands, deserts, and even mountainous areas. Some species are terrestrial, living in burrows they dig in the ground, while others are arboreal, residing in trees or shrubs. The specific habitat of a tarantula species is often influenced by factors like climate, prey availability, and the presence of suitable shelter. For example, desert tarantulas have adapted to arid conditions, developing behaviors to conserve water and regulate their body temperature. Their adaptability is a key factor in their success as a species, allowing them to colonize a diverse array of environments. Understanding their habitat is crucial to providing the correct enclosure for tarantulas kept as pets.
Tarantula Fact 4 Tarantulas and Their Diet
Tarantulas are primarily carnivores, feeding on a diet of insects and other invertebrates. They are ambush predators, lying in wait for their prey to come within striking distance. Their diet consists of a variety of insects, such as crickets, mealworms, and cockroaches, as well as other spiders and small vertebrates like lizards, and even small birds, hence the misnomer ‘bird-eating spider’. They use their fangs (chelicerae) to inject venom into their prey, which both paralyzes and begins to break down the tissues for easier consumption. The tarantula then uses its mouthparts to grind up the prey. The size of the prey a tarantula can consume depends on its size. Larger tarantulas can handle larger prey, while smaller ones are limited to smaller meals. Their diet can change depending on prey availability, but they are opportunistic feeders and will eat whatever they can catch.
Tarantula Fact 5 Tarantula Lifespan

One of the most remarkable aspects of tarantulas is their lifespan. Female tarantulas can live for an exceptionally long time, often exceeding 20 years in the wild, and sometimes even longer in captivity. Males, on the other hand, typically have a much shorter lifespan, often dying within a year or two after reaching maturity. The longer lifespan of females is attributed to their less active lifestyle and the energy expenditure associated with reproduction. Several factors influence a tarantula’s lifespan, including species, diet, habitat, and overall health. Providing the right conditions can significantly increase the lifespan of tarantulas kept as pets. The longevity of female tarantulas is a fascinating trait, making them a long-term commitment for those who choose to keep them as pets.
Tarantula Fact 6 Tarantula Behavior and Temperament
Tarantulas exhibit a range of behaviors that vary depending on the species and their environment. They are generally solitary creatures, with the exception of mating season. Some species are docile and can be handled without too much risk, while others are more defensive and may bite or flick urticating hairs when threatened. Their temperament can also be affected by factors such as their age, health, and the environment they are kept in. When threatened, tarantulas may display defensive postures, such as rearing up, showing their fangs, or rubbing their legs together to release urticating hairs. Observing their behavior is crucial for understanding their needs and ensuring their well-being, especially for pet owners. Responsible tarantula care involves a deep understanding of species-specific behavior and temperament.
Tarantula Fact 7 Tarantula Venom Is It Dangerous
Contrary to popular belief, the venom of most tarantula species is not considered highly dangerous to humans. While their bite can be painful, causing localized pain, swelling, and redness, it is typically not life-threatening. The severity of the reaction varies depending on the species, the amount of venom injected, and the individual’s sensitivity. Some people may experience more severe symptoms, such as muscle cramps, nausea, and fever, but these are rare. Tarantulas primarily use their venom to subdue their prey. While not generally dangerous, it is still best to avoid being bitten. Proper handling techniques and caution are essential when interacting with tarantulas. The venom is often compared to a bee sting in terms of severity.
Tarantula Fact 8 Tarantulas as Pets

Tarantulas are increasingly popular as pets, thanks to their unique appearance and relatively low maintenance needs. However, they require specific care, including a proper enclosure, appropriate temperature and humidity, and a suitable diet. Choosing a species that matches your experience level is crucial, as some tarantulas are better suited for beginners than others. Providing a secure, well-ventilated enclosure, with appropriate substrate for burrowing or climbing, is essential for their well-being. Regular feeding with live insects and providing fresh water are also crucial. While they don’t require a lot of interaction, tarantulas can be fascinating pets to observe. Owning a tarantula is a commitment that requires knowledge of their specific needs and a responsible approach to their care.
Tarantula Fact 9 Tarantula Molting
Molting is a crucial process for tarantulas, allowing them to shed their old exoskeletons and grow. This process involves the tarantula secreting a new, larger exoskeleton beneath the old one. When ready, the tarantula will flip onto its back, and the old exoskeleton will split open, allowing the spider to emerge. During this time, the tarantula is vulnerable and defenseless, as its new exoskeleton is soft. The frequency of molting depends on the tarantula’s age, with younger tarantulas molting more frequently than older ones. The molting process can take several hours, or even days, depending on the size of the tarantula. After molting, the tarantula will be larger and have a new exoskeleton. It is important not to disturb a tarantula during molting.
Tarantula Fact 10 Different Types of Tarantulas
The world of tarantulas is incredibly diverse, with hundreds of different species found across the globe. These species vary in size, color, behavior, and habitat. Some popular pet tarantula species include the Mexican Redknee, the Chilean Rose, and the Pinktoe tarantula, all known for their relatively docile temperaments and vibrant colors. Others, like the Goliath birdeater, are more challenging to care for and are recommended for experienced keepers only. Each species has specific care requirements, including enclosure size, humidity levels, and dietary needs. The diversity of tarantulas means that there is likely a species to suit the interests and experience level of almost any spider enthusiast, underscoring the need for research prior to keeping any tarantula species.
