Varmint hunting was a popular sport in Arizona when I lived there in the 1960s.There were clubs in many of the communities, that had contests to see who could kill the most coyotes, bobcats and mountain lions. Once a year there was a gathering of these clubs with a barbecue and contests including shooting matches and varmint calling. There were displays of the latest hardware used to hunt the critters, such as hand made calls that could sound like a wounded rabbit