DID YOU KNOW?
Super-Sized Spider: The Goliath birdeater tarantula, the world's largest spider, can grow to the size of a dinner plate. As its name suggests, it's been known to prey on birds.
Strong Like Steel: The silk of the orb weaver spiders rivals the tensile strength of high-grade steel, but is much less dense. It would make a great substitute for Kevlar in bullet-proof vests — if only spiders could produced enough silk.
The Eyes Have It: To match their eight legs, most spiders have eight eyes that are arranged in a variety of ways depending on the species. Some spiders have six, four, two or even — in the case of cave-dwelling species — no eyes.