The Brazilian Wandering Spider is recognized as the deadliest spider in the world. Native to tropical and subtropical regions of South America, Brazilian Wandering Spiders are extremely fast, extremely venomous, and extremely aggressive. They grow to around 4 to 5 inches. Adult spiders eat large insects, small lizards, and mice. It's venom is enough to kill 255 mice.
Brazilian Wandering Spiders have turned up in other parts of the world as they have been known to occasionally hide in clusters of bananas.