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, ...

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, holds the record for the largest leg span at around 12 inches.

The Goliath birdeater doesn't just it birds. It also eats small rodents, frogs and insects. Milan Zygmunt / Shutterstock ...