(FORTUNE Small Business) – As a job description, "Rogue Taxidermist" seems designed to get a laugh, but when you see the work of the Minnesota Association of Rogue Taxidermists--say, a squirrel nibbling on a bloody finger--that chuckle might get caught in your throat. Somewhere between fascination and revulsion lies the art of Minneapolis-based MART founders Scott Bibus, Sarina Brewer (right), and Robert Marbury--ages 25, 34, and 34, respectively--who banded together in June 2004. Among the most popular items: Brewer's two-headed chicks ($150) and her "feejee mermaids" ($475 to $1,200), monkey-fish hybrids familiar to collectors of sideshow memorabilia. The artists sell their creations through their websites, on eBay, and at gallery shows. Catch their work in October at the Bell Museum of Natural History in Minneapolis. --JULIE SLOANE