When spiders self-amputate two of their legs, they quickly adjust their running gait so they can return to full speed ...

The Sydney funnel-web spider has extremely dangerous venom, but according to a new study this spider is actually three different species — one of which, the "Newcastle big boy," is much larger.

Their venom contains a toxin that attacks the human nervous system ... untangled how these species are related by collecting wild spiders throughout the Sydney suburbs and analyzing specimens ...