Rodney Irwin looks over his shoulder at his veiled chameleon lizard during 

Rodney Irwin looks over his shoulder at his veiled chameleon lizard during the kick-off ceremonies for the 2013 Python Challenge in Davie, Fla., Saturday, Jan. 12, 2013. Irwin said he had rescued the lizard, native to Yemen, after it was turned loose by a breeder near the Everglades. Wildlife experts say pythons are just the tip of the invasive species iceberg. Florida is home to more exotic species of amphibians and reptiles than anywhere else in the world, said John Hayes, dean of research for the University of Florida’s Institute for Food and Agricultural Sciences. (AP Photo/J Pat Carter)
Associated Press
Rodney Irwin looks over his shoulder at his veiled chameleon lizard during the kick-off ceremonies for the 2013 Python Challenge in Davie, Fla., Saturday, Jan. 12, 2013. Irwin said he had rescued the lizard, native to Yemen, after it was turned loose by a breeder near the Everglades. Wildlife experts say pythons are just the tip of the invasive species iceberg. Florida is home to more exotic species of amphibians and reptiles than anywhere else in the world, said John Hayes, dean of research for the University of Florida’s Institute for Food and Agricultural Sciences. (AP Photo/J Pat Carter)
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