Four good first tarantulas, what makes each one different, and how to size the enclosure.
Curly Hair is the easiest place to start. Arizona Blonde and Mexican Red Rump are good first ground dwellers, too. Pick a Guyana Pink Toe only if you want a climber and can give it a tall, well-ventilated enclosure. Measure your tarantula before buying its enclosure.
The one who started it all
Tliltocatl albopilosus. Ground-dwelling, New World.
The easiest all-around first tarantula: hardy, calm, and simple to set up.
Handling: With caution
Calm desert classic
Aphonopelma chalcodes. Ground-dwelling, New World.
A calm desert tarantula for a keeper who does not mind slow growth.
Handling: With caution
Hardy beauty
Tliltocatl vagans. Ground-dwelling burrower, New World.
A hardy ground dweller with plenty of digging, webbing, and feeding activity to watch.
Handling: Best left alone
Gorgeous climber
Avicularia avicularia. Tree-dwelling, New World.
Pick this one if you want a climber and can give it a tall enclosure with real cross-ventilation.
Handling: Best left alone — quick climber
Measure diagonally from one extended front leg to the opposite rear leg. That is diagonal leg span, not body length.
Choose Ground or Tree, find its current leg span, and shop the setup that fits now. If it falls between sizes, move up. A grow-out fits now and needs an upgrade as the animal grows. Ordering a mixed-size animal? Ask us to match the enclosure before it ships.
Start around 3× the current leg span long by 2× wide. Keep open fall distance low with deep, packed substrate. The clinic guide uses about 3–4× floor space, limits inside height to 1.5×, and calls for 4–8+ in of packed substrate for burrowers.
| Current leg span | Room to aim for | Vet guide | Shop the right setup |
|---|---|---|---|
| Current leg span1 in | Room to aim for3 × 2 in floor | Vet guideAbout 3–4 in of floor space; inside H ≤1.5 in |
Shop the right setup
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| Current leg span2 in | Room to aim for6 × 4 in floor | Vet guideAbout 6–8 in of floor space; inside H ≤3 in |
Shop the right setup
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| Current leg span3 in | Room to aim for9 × 6 in floor | Vet guideAbout 9–12 in of floor space; inside H ≤4.5 in |
Shop the right setup
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| Current leg span4 in | Room to aim for12 × 8 in floor | Vet guideAbout 12–16 in of floor space; inside H ≤6 in |
Shop the right setup
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| Current leg span5.5 in example | Room to aim for16.5 × 11 in floor | Vet guideAbout 16.5–22 in of floor space; inside H ≤8.25 in |
Shop the right setup
Need a larger enclosure?
Send us the species and current leg span. We'll help size the next setup. Get a size match |
Start around 2× the current leg span long, 1.75× wide and 3× tall. The clinic guide calls for at least 4× total height with substrate filling one-third of the enclosure. Anchor the cork, keep cross-ventilation open, and count climbing room above the substrate.
| Current leg span | Room to aim for | Vet guide | Shop the right setup |
|---|---|---|---|
| Current leg span1 in | Room to aim forAbout 2 × 1.75 × 3 in total | Vet guideBox H ≥4 in; substrate ≥⅓ of enclosure |
Shop the right setup
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| Current leg span2 in | Room to aim forAbout 4 × 3.5 × 6 in total | Vet guideBox H ≥8 in; substrate ≥⅓ of enclosure |
Shop the right setup
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| Current leg span3 in | Room to aim forAbout 6 × 5.25 × 9 in total | Vet guideBox H ≥12 in; substrate ≥⅓ of enclosure |
Shop the right setup
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| Current leg span4 in | Room to aim forAbout 8 × 7 × 12 in total | Vet guideBox H ≥16 in; substrate ≥⅓ of enclosure |
Shop the right setup
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| Current leg span5 in example | Room to aim forAbout 10 × 8.75 × 15 in total | Vet guideBox H ≥20 in; substrate ≥⅓ of enclosure |
Shop the right setup
Need a larger enclosure?
Send us the species and current leg span. We'll help size the next setup. Get a size match |
Product names show outside dimensions. Acrylic, substrate and décor reduce usable space, so size up if the animal would only just fit on paper.
Where the keeper numbers come from. Keepers on Arachnoboards and r/tarantulas have used the 3×-long by 2×-wide ground rule for years, although not everyone uses the same rule. The exact tree-dweller numbers come from a published enclosure calculator. Forum advice agrees that height matters, but the exact shape varies. These are rules of thumb, not proven minimums.
Where the vet numbers come from. Tree of Life Exotic Pet Medical Center published the ground-dweller guidance. Chicago Exotics Animal Hospital published the tree-dweller guidance. They are clinic care sheets, not lab-tested minimums.
Have the enclosure ready before your tarantula ships. Check that species' care guide for substrate, hide, airflow, and moisture. These four tarantulas do not use the same setup.
A tarantula may stop eating, close its hide, or lie on its back before and during a molt. Remove live prey and leave it alone. Its care guide will tell you when it is safe to feed again.
Curly Hairs and Arizona Blondes may tolerate brief, careful handling, but keep them low over a soft surface and stop if they bolt, rear up, or kick hairs. Move Red Rumps and Pink Toes with a catch cup.
These words tell you roughly where a tarantula is in its growth, not its exact age or size. A sling or spiderling is a baby, a juvenile is still growing, a subadult is nearing maturity, and an adult is mature. Two tarantulas called juvenile can still be very different sizes.
Use the leg-span size or range printed on the exact option you are buying, not the stage word or an adult photo. Unsexed means nobody has reliably confirmed the sex, so do not plan around receiving a female.
A tarantula can be a years-long or decades-long commitment, depending on species and sex. Our care guides estimate about 15–25 years for female Curly Hairs and Red Rumps, about 10–12 years for female Guyana Pink Toes, and roughly 25–40+ years for females in the broader Aphonopelma guide that includes Arizona Blondes. Those are useful ranges, not promises.
Males usually mature and die much sooner than females. An unsexed sling could be either, so make sure both possibilities work for you. If lifespan matters to your choice, shop a reliably sexed tarantula or contact us about the sex before ordering.
Have the enclosure finished before you open the shipping container. Work in a closed, quiet room with a catch cup nearby, then guide the tarantula into its new home without grabbing it. Add fresh water, secure the lid, and give it a few quiet days with no handling.
A new arrival may hide or refuse food while it settles. Once it is moving normally, offer one appropriately sized feeder and remove it within 24 hours if ignored. Contact Big Z right away if the tarantula arrived injured, is leaking fluid, cannot stand, or stays tightly curled and unresponsive.
Feed captive-raised roaches, crickets, or mealworms sized for the tarantula. As a rough schedule, slings eat once or twice a week, juveniles about once a week, and most adults every one to two weeks. Watch the abdomen and feeding response instead of forcing the calendar.
Prey should be no longer than the tarantula's carapace. Offer one appropriately sized feeder at a time, remove anything uneaten within 24 hours, and stop feeding when premolt is suspected.
Most of the time, leave it alone. Refusing food, slowing down, a bald patch turning darker, extra webbing, or a sealed burrow can all happen before a molt. Arizona Blondes may also fast for weeks or months. A tarantula lying on its back is normally molting—do not flip it over.
Remove live prey, keep drinking water available, and do not open the sealed hide or pull at the old skin. After the molt, follow that species' life-stage guide and wait until the new fangs and body have hardened before feeding again.
There is not one humidity target that fits all four. Curly Hairs like a dry-leaning setup with one lightly moist area. Red Rumps use a dry surface over lightly moist lower layers. Arizona Blondes use dry substrate with a full water dish. Guyana Pink Toes need mostly dry substrate, drinking water, and strong cross-ventilation.
Use a clean, shallow dish that fits the tarantula and add moisture where its care guide says. Never spray the tarantula itself. If a Pink Toe enclosure stays wet or grows condensation, it is too damp or does not have enough airflow.
Usually, no. Check the temperature range in that species' care guide, then measure the room. Tarantulas do not need UV, and direct sun or a heat lamp can overheat and dry a small enclosure quickly.
Use a thermometer that records the daily high and low. If the room stays too cool, warm the room—not the enclosure. Never heat a burrowing enclosure from below.
Use long tongs to remove uneaten prey, dry food remains, feces, and visible mold, then wash and refill the water dish. That is most of the cleaning. Do not tear apart a healthy web or burrow just to make the enclosure look tidy.
Replace all the substrate only for contamination, a stubborn pest or mold problem, unsafe substrate, or a planned rehouse. If mold keeps returning, fix the moisture and airflow instead of repeatedly rebuilding the habitat.
Hiding, burrowing, webbing, fasting, sealing a hide, and lying on the back during a molt can all be normal. A tarantula sitting upright with its legs curled tightly underneath is different from a normal molt on the back.
Call an exotics veterinarian after a fall with a leaking wound, for lasting trouble with balance or movement, for unusual discharge around the mouth, or for a molt that seems stuck. Do not pull the tarantula from its old skin or try a home treatment while you wait for experienced help.
Send Big Z the species, its current leg span, and the shelf space you have. Big Z will help you choose the closest enclosure we stock.
