Which arachnid has the most powerful venom for humans?
Quick Answer
The Sydney funnel-web spider is one of the most medically dangerous spiders to humans, with venom that can cause severe and potentially fatal symptoms.
The Full Story
The Sydney funnel-web spider is widely regarded as one of the most dangerous arachnids to humans. Its venom contains compounds that can cause rapid and severe illness, especially in children if untreated. The species Atrax robustus has been the subject of major antivenom work in Australia, where bites are now far more survivable with prompt medical care. Its reputation comes from potency and medical significance, not from being the largest spider.
Key Facts
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