People Pets
The World's Most Bizarre Critters!Self-described "naturalist" and host of Science Channel's Weird Creatures, Nick Baker shares his favorite weird animals with PEOPLEPets.com
Credit: Science Channel
Updated: Thursday Nov 05, 2009 | 06:00 AM EST By: Blaine Zuckerman
HORESHOE CRAB
You know that guy who never wants to leave the party? Well, this is that guy in the animal kingdom. The horseshoe crab (with Baker) has been around for half a billion years. If you see one – they're all over the eastern seaboard – thank it for its contributions to science. "We use their blood to screen for contamination in hospitals," Baker explains. "If you've ever had an operation, you owe something to the horseshoe crab."
