Free Republic

Piotr Naskrecki was taking a nighttime walk in a rainforest in Guyana, when he heard rustling as if something were creeping underfoot. When he turned on his flashlight, he expected to see a small mammal, such as a possum or a rat. "When I turned on the light, I couldn't quite understand what I was seeing," said Naskrecki, an entomologist and photographer at Harvard University's Museum of Comparative Zoology. A moment later, he realized he was looking not at a brown, furry mammal, but an enormous, puppy-size spider... (click image to enlarge)

In a world where even the smallest spiders can provoke a fearful shriek, Theraphosa blondi takes scare tactics to a whole new level. This South American tarantula holds the record for world's largest spider. Other spiders might have longer legs, but T. blondi's large body means its overall weight can reach 6 ounces (170 grams).Commonly known as the Goliath birdeater due to an 18th-century engraving showing another member of the tarantula family eating a hummingbird--which gave the entire Theraphosa genus the nickname of "bird eaters"--the gargantuan spider is not quite as menacing as it might seem.