Australian spider questions
Is This Spider Dead or Playing Dead? Behaviour Clues
How to read curled legs, stillness, awkward movement, moulting and escape behaviour without poking or handling an unknown Australian spider.
Quick answer
Start here
A motionless or oddly moving spider cannot be diagnosed from posture alone. Stillness may be normal daytime rest, cold-related slowing, defence, moulting or injury. Tightly curled legs often occur after death or severe dehydration, but one photo is not proof. Do not poke, pick up, feed or spray it. Watch from a distance, note changes over time and keep people and pets away.
Useful clues
Read the situation first
Still but legs look normal
Many spiders remain motionless for long periods while resting, hiding or waiting for prey. Look for a normal stance and a suitable web, retreat or daytime shelter.
Tightly curled underneath
Spiders extend their legs using hydraulic pressure, so legs commonly draw inward after death or serious loss of condition. Treat this as a clue, not a remote diagnosis.
Hanging or lying near a moult
A pale, hollow spider-shaped shell is an exuvia. A freshly moulted spider may be soft, vulnerable and unusually still; do not disturb it.
Hopping, dropping or running oddly
Jumping, dropping on silk, freezing and sudden escape runs can all be defensive behaviour. Injury, a missing leg or a slippery surface can also change movement.
Practical steps
What to do next
- Watch from at least a few steps away and do not test the spider with a finger or object.
- Check the whole scene for a web, retreat, shed skin, egg sac, recent spray, water, heat or direct sun.
- Take one whole-body photo and one wider habitat photo, then record the time and location.
- If indoors in a risky position, place a container over it only when that can be done without contact.
- Recheck later rather than repeatedly disturbing it; a change in posture or position is more useful than one moment.
- If a person may have been bitten or is unwell, stop observing the spider and follow Australian first-aid guidance.
Stillness is normal spider behaviour
A web-builder may wait almost motionless for prey, while a nocturnal huntsman or white-tail may shelter through daylight. Museums Victoria notes that huntsmans usually run from danger and that disturbed redbacks may drop and appear dead. Context and change over time matter more than a dramatic-looking pose.
Curled legs are useful but not absolute
A spider's leg joints rely partly on internal fluid pressure to extend. After death, the legs often curl inward as that pressure is lost. Severe dehydration or injury may create a similar appearance, and a partly hidden spider can look more curled in a flat photo than it really is. Never declare it safe to touch from posture alone.
Moulting can look alarming
A shed skin can look like a dead spider because it preserves legs, hairs and body shape. Look for a split near the front of the body and a papery, translucent appearance. The live spider may be close by and temporarily pale or soft. Leave the area quiet; moving or feeding a freshly moulted spider can cause harm.
Odd movement does not identify a species
Huntsmans may jump from a wall while escaping. Jumping spiders deliberately hop. Orb-weavers can drop from a web on silk. A spider missing one or more legs may move unevenly but still survive and later regenerate part of a limb over successive moults. Movement is one clue to family and condition, never enough for a confident species identification.
Keep observation separate from medical decisions
A strange-looking spider does not confirm a bite, and a normal-looking spider does not rule one out. If someone has significant pain, sweating, nausea, breathing difficulty or a suspected bite from a funnel-web, mouse spider or unidentified big black spider, follow healthdirect guidance and call 000 where indicated.
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Common questions
Is This Spider Dead or Playing Dead? Behaviour Clues FAQ
Do spiders play dead?
Some spiders freeze or remain still when disturbed, and defensive immobility can look like death. Observe without touching and look for change over time.
Does curled up always mean dead?
No. A tight inward curl is a common post-death clue, but posture alone cannot confirm death or its cause.
Why is a huntsman hopping?
It may be making an escape movement, losing grip, reacting defensively or compensating for injury. Give it space and do not chase it.
Should I give a weak spider water?
Do not drip water onto or hand-feed an unknown wild spider. Move pets and people away and avoid turning a brief observation into close handling.
Can I pick it up if it has not moved?
No. A live spider may move suddenly, and posture is not a safety test. Use a container if removal is necessary and safe.
Identification is not medical advice
If a bite has occurred or someone seems unwell, follow Australian health advice and seek urgent help for serious symptoms.