About 40 species spread across Australia, the funnel-web Spider is one of the most dangerous arachnids. Found in two distinct genera: Hadronyche (or Atrax), these spiders can pierce the skin because of their strong fangs.
All funnel-web spiders behave similarly, which means they are all slow-moving, adaptable, and nocturnal. However, the venom of this spider species is highly toxic, so immediate treatment is required if they bite. Since these spiders are considered dangerous, anyone visiting or staying in a region with many funnel-web spiders must take suitable precautions.