How Long Do Tarantulas Live? Lifespan by Species [2026]

Tarantula Lifespan Overview

Tarantulas are among the longest-lived invertebrate pets you can keep. However, lifespan varies dramatically between sexes and species. Female tarantulas typically live 15-30 years, while males live only 3-10 years — a gap driven by fundamental biology.

This stark difference means the sex of your tarantula matters more than almost any other factor when it comes to how long your pet will be with you.

Female vs. Male Lifespan

Why the difference?

Male tarantulas undergo a terminal molt — their final shed — after which they develop specialized mating hooks on their front legs. Once mature, males stop eating regularly and focus on finding a mate. Most males die within 1-2 years of their mature molt from stress, exhaustion, or being consumed by the female after mating.

Females, by contrast, continue molting and growing throughout their lives, allowing them to regenerate lost limbs and maintain their health over decades.

Lifespan by Species

If longevity is your priority, New World species in the genera Brachypelma, Grammostola, and Aphonopelma tend to produce the longest-lived females.

Factors Affecting Lifespan

Temperature

Tarantulas kept at the cooler end of their safe range tend to have slower metabolisms and may live slightly longer. Avoid temperature extremes in either direction.

Diet

Overfeeding accelerates growth and may shorten lifespan. Feed adult tarantulas one or two appropriately sized prey items per week — see the feeding guide for details.

Stress

Excessive handling, vibrations, cage mates, and frequent enclosure changes cause chronic stress. A calm, stable environment promotes longevity.

Humidity and Hydration

Dehydration is a common but preventable killer. Always provide a clean water dish and maintain species-appropriate humidity in the enclosure.

Molting Success

Failed molts can be fatal. Proper humidity and a stress-free environment reduce the risk of stuck molts.

Signs of Aging

Older female tarantulas may show:

• Longer fasting periods between molts
• Slower movement
• Longer recovery after molting
• Slightly reduced appetite
• Thinner leg hair

These changes are gradual and normal over the span of years.

Choosing a Long-Lived Pet

If you want a tarantula that will be with you for decades, consider:

1. Get a confirmed female — this is the single most important factor
2. Choose a slow-growing species — Brachypelma and Grammostola species live longest
3. Buy a sling or juvenile — you get the full lifespan experience and can watch it grow
4. Provide optimal care — proper habitat, diet, and minimal stress

Check the best pet tarantulas guide for beginner-friendly, long-lived species recommendations.

Related Guides

• Tarantula Care Guide — complete care overview
• Tarantula Molting Guide — molt signs and post-molt care
• Tarantula Feeding Guide — diet and schedule
• Best Pet Tarantulas — species for beginners