Remember those panicked reports of people finding deadly spiders-perhaps the deadliest on Earth-in bunches of bananas? Those reports referred to the Brazilian wandering spider, whose bite can cause severe burning, sweating, and goose bumps followed by high or low blood pressure, nausea, hypothermia, blurred vision, vertigo, and convulsions.
The Guinness Book of World Records considers the Brazilian wandering spider the most venomous in the world. Hundreds of bites are reported annually, but a powerful anti-venom prevents deaths in most cases.