Cribs Academy — Tarantulas 101

Tarantulas 101: Understanding Terrestrial, Arboreal & Fossorial

The single most important thing to know before setting up any tarantula enclosure is your animal's lifestyle type. Get this right and everything else gets easier. Get it wrong and you'll have a stressed animal no matter how expensive your setup is.

Beginner · 5 min read

Terrestrial, Arboreal and Fossorial tarantula enclosure types

🌿 Terrestrial Tarantulas

Terrestrial tarantulas live on the ground — roaming open terrain and retreating into shallow burrows or hides when threatened. Built for horizontal movement, not climbing.

Common species: Mexican Red Knee (Brachypelma hamorii), Chaco Golden Knee (Grammostola pulchripes), Salmon Pink Birdeater (Lasiodora parahybana)

Terrestrial tarantula enclosure setup
PriorityFloor space over height
HumidityDry with moist corner for gradient
HeightNo more than 1.5x leg span above substrate — falls can be fatal
Water dishShop Water Dishes

→ Shop Terrestrial Enclosures

🌳 Arboreal Tarantulas

Arboreal tarantulas live in trees — in hollow branches, under bark, or inside bromeliad plants. Fast, agile, and highly adapted for vertical living.

Common species: Martinique Pink Toe (Caribena versicolor), Common Pink Toe (Avicularia avicularia), Indian Ornamental (Poecilotheria regalis)

Arboreal tarantula enclosure setup
PriorityHeight over floor space
VentilationCross-ventilation is non-negotiable — stagnant air is the #1 husbandry killer
HumidityLightly moist base, good airflow — never stuffy
AccessFront-opening enclosure — top access destroys tube webs
Water dishShop Water Dishes

→ Shop Arboreal Enclosures

🪨 Fossorial Tarantulas

Fossorial tarantulas are burrowers — living almost entirely underground. Rarely seen at the surface and that is completely normal.

Common species: Cobalt Blue (Cyriopagopus lividum), Asian Earth Tigers (Chilobrachys spp.), Trapdoor Baboon (Idiothele mira)

Fossorial tarantula enclosure setup
PriorityDeep substrate — minimum 6–8 inches
SubstrateArachnidirt Original Blend — holds burrow structure
MoistureKeep bottom third moist, top dry
VisibilityDon't panic if you never see them — normal behavior
WateringPour slowly down one corner every 2–4 weeks

→ Shop Fossorial Enclosures

Sources: Foelix, R.F. (2011). Biology of Spiders (3rd ed.). Oxford University Press. · Cloudsley-Thompson, J.L. (1983). Desert Adaptations in Spiders and Scorpions. Zoological Journal of the Linnean Society.

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Understanding Tarantula Lifestyles: Terrestrial, Arboreal & Fossorial

Beginner · 5 min read

The single most important thing to know before setting up any tarantula enclosure is your animal's lifestyle type. Get this right and everything else gets easier.

🌿 Terrestrial Tarantulas

Terrestrial tarantulas live on the ground — roaming open terrain and retreating into shallow burrows or hides when threatened. Built for horizontal movement, not climbing.

Common species: Mexican Red Knee (Brachypelma hamorii), Chaco Golden Knee (Grammostola pulchripes), Salmon Pink Birdeater (Lasiodora parahybana)

PriorityFloor space over height
Substrate2–4 inches coco coir + topsoil
HumidityDry with moist corner for gradient
HeightNo more than 1.5x leg span above substrate — falls can be fatal
Water dishAlways provide one and keep it full

🌳 Arboreal Tarantulas

Arboreal tarantulas live in trees — in hollow branches, under bark, or inside bromeliad plants. Fast, agile, and highly adapted for vertical living.

Common species: Martinique Pink Toe (Caribena versicolor), Common Pink Toe (Avicularia avicularia), Indian Ornamental (Poecilotheria regalis)

PriorityHeight over floor space
VentilationCross-ventilation is non-negotiable — stagnant air is the #1 husbandry killer
AnchorCork bark leaned vertically for webbing attachment
AccessFront-opening enclosure — top access destroys tube webs
HumidityLightly moist base, good airflow — never stuffy

🪨 Fossorial Tarantulas

Fossorial tarantulas are burrowers — living almost entirely underground. Rarely seen at the surface, and that is completely normal.

Common species: Cobalt Blue (Cyriopagopus lividum), Asian Earth Tigers (Chilobrachys spp.), Trapdoor Baboon (Idiothele mira)

PriorityDeep substrate — minimum 6–8 inches
Mix70% coco coir / 20% topsoil / 10% sand
MoistureKeep bottom third moist, top dry
VisibilityDon't panic if you never see them — normal behavior
WateringPour slowly down one corner every 2–4 weeks
Sources: Foelix, R.F. (2011). Biology of Spiders (3rd ed.). Oxford University Press. · Cloudsley-Thompson, J.L. (1983). Desert Adaptations in Spiders and Scorpions. Zoological Journal of the Linnean Society.
📋 More guides coming soon — feeding, molting, rehousing, and species spotlights.
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