Sweetwater Jaycees measure and roll up rattlesnake skins at the World's Biggest Rattlesnake Round-up in Sweetwater, Texas March 14, 2009. The round-up was started 51 years ago by the Jaycees as a way for ranchers to rid the abundance of snakes that were threatening their livestock. The Jaycees is a leadership training organization for young men and women between the ages of 21-39. REUTERS/Jessica Rinaldi (UNITED STATES SOCIETY ENVIRONMENT ANIMALS IMAGE OF THE DAY TOP PICTURE) 

A Sweetwater Jaycee skins a rattlesnake at the World's Biggest Rattlesnake Round-up in Sweetwater, Texas March 14, 2009. The round-up was started 51 years ago by the Jaycees as a way for ranchers to rid the abundance of snakes that were threatening their livestock. The Jaycees is a leadership training organization for young men and women between the ages of 21-39. REUTERS/Jessica Rinaldi (UNITED STATES ANIMALS ENVIRONMENT SOCIETY) 

A prairie rattlesnake warns approaching hikers with a rattle of his tail in Dinosaur Provincial Park, Alberta in this picture taken August 7, 2008. Adam Martinson, a University of Calgary student working on a Masters degree has come to Dinosaur Provincial Park, listed as a United Nations World Heritage site, to study why snakes slither onto -- and too frequently die on -- the asphalt blacktop of the region's roads. For prairie rattlesnakes, considered to be potentially a "species at risk" by the Alberta government, and bull snakes, their nonvenomous cousins, roads are a deadly hazard. Picture taken August 7. REUTERS/Todd Korol (CANADA) 

Heart of Texas Snake Handler Don Bearden has a rattlesnake placed on his face during a performance at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

A man rolls out a roll of crime scene tape to keep visitors away from boxes full of rattlesnakes at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Deputy Constable Butch Dennis holds a rattlesnake at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers Kat Stevens displays photos of her arm after she was bitten by a snake to the crowd at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Taylor Jaycee Mark Barron (L) hands his son Colton, 11, (R) a coiled rattlesnake before deciding against the idea during a birthday celebration at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Colton Barron, 11, (R) receives a birthday kiss from his mother, Tracie, (2nd from R) with sister Catie, 9, sitting atop her shoulders after Colton was brought into the rattlesnake pit to celebrate his birthday at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handler David Gay (L) throws a rattlesnake into a burlap sack held by first time competitor Michael Williams (C) as Heart of Texas Snake Handlers Shawn Jonas (2nd from L) and Jack Bibby (R) supervise at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Joseph Grady (L) prepares to pick up a rattlesnake and throw it into the burlap sack held by his sacking partner Don Beardon (R) while competing in the the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

A Heart of Texas Snake Handler falls off of a carnival ride at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers tell jokes before the start of the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers' Jack Bibby (R) places a rattlesnake on his son, Michael, 15, during a performance at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers' Jack Bibby lays still as rattlesnakes are piled on him during a performance at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers' Jack Bibby holds out his hand to display his thumb which was disfigured by a snakebite before the start of the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers' Jack Bibby kisses a coiled rattlesnake during a performance at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Heart of Texas Snake Handlers Terry Tippit (L) and Britt Stevens (R) watch as fellow Heart of Texas Snake Handler Jack Bibby (C) dangles rattlesnakes from his mouth during a performance at the Taylor Rattlesnake Sacking Championships in Taylor, Texas March 31, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

A Rattlesnake rests in its cage at a live reptile exhibition in Irun, Basque Country April 29, 2006. REUTERS/Pablo Sanchez 

Mac Smith, 14, (R) pauses to chew his rattlesnake as Sam Pintor, 18, (L) finishes eating during the rattlesnake eating contest at the 48th annual Rattlesnake Round-up in Sweetwater, Texas March 12, 2006. Sweetwater is home to the World's Largest Rattlesnake Round-up which started as a way for ranchers to rid the abundance of snakes that were threatening their livestock. REUTERS/Jessica Rinaldi 

A rattlesnake skinner holds the rattle before skinning the snake at the 48th annual Rattlesnake Round-up in Sweetwater, Texas March 10, 2006. Sweetwater is home to the World's Largest Rattlesnake Round-up which started as a way for ranchers to rid the abundance of snakes that were threatening their livestock. REUTERS/Jessica Rinaldi 

A skeleton of a Western Diamondback Rattlesnake, or Crotalus atrox, is displayed at Cabarceno nature reserve near Santander, northern Spain December 9, 2005. Over 500 animals from 50 different species live in this famous natural reserve. REUTERS/Victor Fraile Pictures of the Month December 2005 

Steve Irwin, host of Animal Planet's series "The Crocodile Hunter," holds a rattle snake during Nickelodeon's 15th annual Kids' Choice Awards in Santa Monica, California on April 20, 2002. 

Steve Irwin, host of Animal Planet's series "The Crocodile Hunter,"
holds a rattle snake during Nickelodeon's 15th annual Kids' Choice
Awards in Santa Monica, California on April 20, 2002. REUTERS/Adrees
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