Quick answer
Most tarantulas live around Females up to 20–30 years, though predation, disease, habitat quality, and (for pets) veterinary care shift individual outcomes.
Key takeaway
Most tarantulas live around Females up to 20–30 years, though predation, disease, habitat quality, and (for pets) veterinary care shift individual outcomes.
Typical lifespan
Tarantulas (Theraphosidae) typically live around Females up to 20–30 years. Published averages mix wild and managed populations, so treat any single number as a planning range rather than a guarantee.
What shortens life
In the wild, tarantula mortality is driven by predation, competition, infectious disease, injury, and habitat loss. Food shortages and human conflict also cut average lifespan in many regions.
What supports longer life
Stable habitat, low chronic stress, and adequate nutrition support longevity. Where tarantulas live alongside people, responsible management and veterinary care (for domestic or captive animals) matter as much as genetics.
Life stages
Juveniles face higher mortality than healthy adults. Seniors show slower movement, dental wear, and reduced body condition — useful field signs when comparing age classes.
How this compares
Body size and ecology shape longevity: larger mammals often live longer than small ones, but high-risk lifestyles (open hunting, migration) can reverse that pattern. Always compare like-with-like populations.
Big, hairy, and mostly harmless
Tarantulas are among the largest spiders, but their reputation is far scarier than the reality. Almost all species have venom no more harmful to a healthy person than a bee sting, and they bite only in self-defense. They are ambush predators that pounce on insects, and larger species may take small lizards or rodents.
Urticating hairs
Many New World tarantulas have a clever defense: they flick irritating barbed hairs from their abdomen at attackers using their back legs. These 'urticating' hairs cause itching and irritation to the eyes and skin of would-be predators, buying the spider time to escape.
Molting and growth
Like all spiders, tarantulas grow by molting, shedding their entire exoskeleton to reveal a larger new one underneath. During a molt they are soft and vulnerable, and they can even regrow lost legs over successive molts. The process leaves behind an eerily lifelike empty 'spider' shell.
Long lives and the pet trade
Female tarantulas are remarkably long-lived for invertebrates, with some species reaching 20 to 30 years, while males live only a few years. Their docile nature and longevity have made several species popular exotic pets, though wild collection and habitat loss threaten some species.
Research notes
Figures for tarantulas (Theraphosidae) come from field studies, museum records, and conservation assessments that do not always agree on exact averages. Prefer ranges over single-point claims, and check whether a source describes wild, captive, or mixed populations.
Practical takeaways
If you encounter tarantulas in the wild, prioritise distance and local guidance. If you care for related domestic or captive animals, match diet and housing to species needs rather than generic pet advice. Share accurate status information (Least Concern) when discussing conservation.
Sources
FAQs
How Long Do Tarantulas Live?
Most tarantulas live around Females up to 20–30 years, though predation, disease, habitat quality, and (for pets) veterinary care shift individual outcomes.
What is the scientific name of the tarantula?
Theraphosidae
What do tarantulas eat?
Carnivore
Where do tarantulas live?
Deserts, rainforests, and grasslands
Are tarantulas endangered?
Listed here as Least Concern. Check IUCN and national lists for the latest assessment.