The world is filled with disturbing creatures that slither, crawl, and scuttle. But few things are more dreadful to the imagination than the animals, fungi, and other assorted organisms whose sole purpose in life is to invade and feed off the lives of others. Here are some of the creepiest parasites in the animal kingdom.
A species of worm that can infect human eyes has done it again, and this time it chose a 68-year-old woman from Nebraska. The woman is thought to be only the second human victim of these worms ever documented. But the incident signals they could become an emerging parasitic disease in the U.S.