A multicoloured 3D printed articulated tarantula figure in a pink, gold and green gradient resting on an old leather-bound book on a wooden desk, with reading glasses, a brass lamp and old books in warm light.

Tarantula Facts: Are Tarantulas Dangerous to Humans?

5 min read Updated October 4, 2026 By Kahaus · printed in Poland

In short

Tarantulas are large, hairy spiders from warm parts of the world. They hunt without a catching web and feel their surroundings through the hairs on their legs.
Are tarantulas dangerous? For most species kept at home, the bite is often compared to a wasp sting, but people react differently. After a bite, or with a known allergy, contact a doctor.
Many American species also defend themselves with itchy hairs. Our 20 cm tarantula is PLA: no fangs, no hairs, eight jointed legs.

Tarantula facts are far more interesting than tarantula horror stories. These big, hairy spiders look like film monsters, and most of what people think they know about them comes from films. So: are tarantulas dangerous, and why do they sometimes lie on their backs?

We print a 20 cm tarantula figure, so we hear these questions a lot. Below are the facts we are sure of, without the scary music. One thing up front: this is not a care guide and not medical advice. We make figures, not terrariums.

Tarantula fact sheet

Question	Answer
What animal is it?	A large, hairy spider from the family Theraphosidae
Where does it live?	Warm parts of the Americas, Africa, Asia and Australia: on the ground, in burrows or up in trees
Body	Eight legs and two body parts, the cephalothorax and the abdomen
What does it eat?	Mostly insects and other small animals
Eyesight	Poor; it feels vibrations through the hairs on its legs
Web	No catching web; silk lines its burrow or hiding place
Defence	Threat posture and bite; many American species flick itchy hairs

Are tarantulas dangerous to people?

The short answer: less than their reputation suggests, but they are wild animals, not cuddly toys. Tarantulas have fangs and venom, and they use them to catch prey. For most species that people keep at home, the bite is often compared to a wasp sting.

The important word is "most". People react differently, and some species have stronger venom than others. If someone is bitten, or knows they are allergic to stings, the right step is to contact a doctor, not to read forums.

A tarantula would rather avoid you than fight. Before it bites, it usually warns: it rears up, lifts its front legs and shows its fangs.

The itchy hairs of American tarantulas

Many American tarantulas have a second defence: fine abdomen hairs they flick off with their back legs when disturbed. The hairs cause itching and irritation on skin and are especially unpleasant in the eyes. Species from Africa and Asia do not have them.

Multicoloured 3D printed tarantula figure with a 20 cm leg span resting on an open hand — Our tarantula figure: 20 cm leg span, eight jointed legs, no fangs and no hairs. See the product →

Tarantula facts that surprise people

It lies on its back to grow. A tarantula wears its skeleton on the outside and has to shed it to grow. Many do this lying on their back. It looks alarming, but the spider is moulting, not dying.
It can regrow a leg. A young tarantula that loses a leg can grow it back over its next moults.
It feels more than it sees. Most tarantulas have eight eyes and still see poorly. They read the world through vibrations picked up by the hairs on their legs.
No catching web. Tarantulas do not spin webs to trap prey. They wait, then pounce, and use silk to line their burrow or hiding place.
The name is a mix-up. "Tarantula" comes from Taranto in southern Italy, where it meant a local wolf spider, the one linked to the tarantella folk dance. The big hairy spiders borrowed the name later.
Bird-eating is mostly legend. The German Vogelspinne and the Polish ptasznik both mean bird spider, after an early 18th-century illustration of a large spider eating a small bird. In reality, tarantulas eat mostly insects.
Females live much longer. In many species females outlive males by years, in some cases reaching well over a decade.
The biggest is bigger than ours. The goliath birdeater from South America has a leg span wider than our 20 cm figure.

A tarantula you can keep on the shelf

Our articulated tarantula has a 20 cm leg span and is 16 cm long. All eight legs are jointed: pose it mid-walk, in that threat posture, or folded flat for the shelf. The abdomen and body carry a sculpted hair texture. It snaps together from three parts (abdomen, body and leg section) without glue, screws or tools, and comes in five colourways: black, black-green, blue-green-violet, red-gold and red-yellow-green.

The articulated scorpion is an arachnid too: eight legs, plus pincers and a tail that curls up into the strike pose. Real scorpions glow under ultraviolet light; ours has a crystalline, faceted surface that catches ordinary light. The flexi octopus is no relative at all, it is a mollusc, but it also has eight limbs, which makes for a good spot-the-difference conversation.

Figure	Size	What moves	Build
Tarantula	20 × 16 cm	Eight jointed legs	Three snap-fit parts, no glue
Scorpion	13.9 × 13.1 × 4.3 cm, 88 g	Tail, pincers and legs	Printed in one piece, no assembly
Octopus	about 17 cm	All eight tentacles	Printed in one piece, no assembly

Black-green articulated 3D printed scorpion figure with its tail curled up — The scorpion, 13.9 cm, with the tail in strike pose. See the product →

Blue-green 3D printed octopus figure with eight flexible tentacles — The octopus, about 17 cm: eight arms, no relation. See the product →

Buying for someone who keeps reptiles as well as spiders? The flexi chameleon, 17 cm, the lizards and the snakes are in our guide to gifts for reptile lovers. The whole moving family lives among the flexi animals, and the octopus also sits with the fidget toys.

The tarantula also works as autumn decor. For a full Halloween table with pumpkins, skulls and LED tealights, see Halloween table decorations without real flames and our Halloween and autumn collection.

Safety: these are PLA figures, not animals, and they have small moving parts. They are not suitable for children under 3.

See all flexi animals