largest american spiders
Scientist Piotr Naskrecki was in a South American rainforest when he heard a noise from the undergrowth. Expecting it to be a rat, he was left astonished when he saw this monster. It turned out to be the South American Goliath Birdeater - the largest spider in the world. Incredibly, the spider has a leg span which can grow up to a foot - which is the size of a child's forearm. They can also weight more than 6 ounces and come complete with two-inch fangs full of venom.