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Science & Nature • Arachnids

Tarantula

Tarantulas are large, hairy spiders in the family Theraphosidae.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Tarantulas are large, hairy spiders in the family Theraphosidae. They are found in warm regions on most continents, where many species live in burrows and hunt at night. Despite their intimidating appearance, most tarantulas are not dangerous to humans.

Classification

Tarantulas belong to the spider family Theraphosidae within the order Araneae. They are part of the arachnid class, which also includes scorpions, mites, and ticks.

Physical characteristics

Tarantulas are typically large, hairy spiders with robust bodies and long legs. Species vary widely in size, colour, and behaviour.

Habitat and distribution

Tarantulas occur in warm regions around the world on every continent except Antarctica. Many species live in soil burrows, while others live in trees, scrubland, or other terrestrial habitats.

Diet and behaviour

Tarantulas are carnivorous predators that usually hunt at night. They ambush prey such as insects and may also take small frogs, toads, and mice.

Life cycle and defence

Tarantulas grow by moulting and can regenerate lost legs. When threatened, many species rely on retreat, defensive posture, or urticating hairs rather than aggressive attack.

Key facts

  • Tarantulas are spiders, and spiders are arachnids.
  • They are among the largest spiders in the world.
  • Most tarantulas are nocturnal ambush predators that eat insects and other small animals.
  • Many species are ground-dwelling and live in burrows, though some are arboreal.
  • Females generally live much longer than males.
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Canadian context

Tarantulas are not native to most of Canada, but they are sometimes kept as exotic pets and may appear in Canadian zoological collections or education programs.

Frequently asked questions

What is a tarantula?
A tarantula is a large spider in the family Theraphosidae, known for its hairy body and generally nocturnal predatory habits.
Are tarantulas dangerous to humans?
Most tarantulas are generally harmless to humans, though a bite can be painful and some species may cause irritation or stronger symptoms.
Where do tarantulas live?
They live in warm regions on most continents except Antarctica, in habitats such as burrows, forests, deserts, grasslands, and scrubland.
What do tarantulas eat?
They mainly eat insects and other invertebrates, but larger species may also eat small vertebrates such as frogs, toads, and mice.
How long do tarantulas live?
Some tarantulas can live for decades, with females often reaching much older ages than males.
How many tarantula species are there?
More than 1,000 species have been described, and new species continue to be identified.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/animal/tarantula
    Supports: Classification, general description, habitat, diet, and human impact
  2. National Geographic Kidshttps://kids.nationalgeographic.com/animals/invertebrates/facts/tarantula
    Supports: Diet, behaviour, lifespan, habitat, and general biology
  3. BBC Earthhttps://www.bbcearth.com/factfiles/animals/insects-arachnids/tarantula
    Supports: Species count, distribution, venom, and habitat variety
  4. San Diego Zoo Wildlife Alliancehttps://animals.sandiegozoo.org/animals/tarantula
    Supports: Taxonomy, species estimates, distribution, lifespan, and general facts
  5. National Wildlife Federationhttps://www.nwf.org/Educational-Resources/Wildlife-Guide/Invertebrates/Tarantulas
    Supports: General description and captive popularity
  6. Discover Wildlifehttps://www.discoverwildlife.com/animal-facts/insects-invertebrates/tarantula-facts
    Supports: Name origin, distribution, and hunting behaviour