Related: Drug inspired by spider venom aims to reverse heart attack damage Male funnel-web spiders are typically smaller than females, but they are more dangerous due to a chemical in their venom ...

Known as varicose veins, these blood vessels, which return blood from the legs to the heart, are actually a ... up on the skin's surface like kinky spider webs, are a minor form of varicose ...

Australian scientists have discovered a new species of the deadly funnel-web spider that is bigger and more venomous than its relatives, nicknaming it "Big Boy." In research released Monday ...