Out of more than 30,000 species of spiders, there are three species that make their living through thievery. That number was recently raised from two with the discovery of a tiny, thieving species on the island of Taiwan.

S. Milius, New spider: Unusual suspect steals web, Science News, v.154, p.53. More than 30,000 species, “Spiders” Grolier, 1995, Multimedia Encyclopedia. Image: Diagram of the internal anatomy of a female two-lunged spider. Courtesy of John Henry Comstock. (CC BY 3.0)