#2 Brazilian Wandering Spider
The Brazilian Wandering Spider also goes by Banana Spider and Armed Spider. It belongs to the genus Phoneutria, which classifies harmful venomous arachnids.
The Guinness Book of World Records has named it the world’s most venomous spider for several years. Its bite can be extremely deadly to humans, especially children, and is best avoided.
They can be very aggressive but will only attack when provoked. However, if you do get bitten, the bite will include sensations of burning pain, sweating, goosebumps, altered blood pressure, and vertigo.