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.

The Goliath birdeater spider, native to South America's rainforests, is the biggest spider in the world, with a leg span reaching up to 12 inches (31 cm). The giant huntsman spider, found in Laos, ...

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 ...