rattlesnakes

The snakebite antivenin CroFab, on the U.S. market since 2000, now faces competition from a drug called Anavip. But both are expensive. "Perverse incentives" keep prices high, says one legal scholar.

Texans are obsessed with the Western diamondback rattlesnake. They catch thousands of them each year for snake festivals. Now, a possible ban of gassing snakes by the state jeopardizes those fiestas.