In which of these states is the largest rattlesnake round-up in the United States?

Rattlesnake round-ups, also known as rattlesnake rodeos, are annual events common in the rural Midwest and Southern United States, where the primary attractions are captured wild rattlesnakes which are sold, displayed, killed for food or animal products (such as snakeskin) or released back into the wild. Rattlesnake round-ups originated in the first half of the 20th century for adventure and excitement, as well as to achieve local or regional extinction of perceived pest species.

The largest rattlesnake round-up in the United States is held in Sweetwater, Texas. Held annually in mid-March since 1958, the event currently attracts approximately 30,000 visitors per year and in 2006 each annual round-up was said to result in the capture of 1% of the state's rattlesnake population. Cash prizes and trophies are often given out to participants in categories like heaviest, longest, or most snakes.

Round-ups have economic and social importance to the communities that hold them. The events often attract thousands of tourists, which can bring hundreds of thousands of dollars of revenue into small towns. The Sweetwater Round-Up's economic impact was estimated to exceed $5 million in 2006.