Nests are typically found near dens or caves. Nests are usually found underground, such as in abandoned rodent dens. He runs brothels, speakeasies and illegal gambling dens in southern Manhattan. Saloons and gambling dens sprung up overnight. The long-tailed weasel dens in ground burrows, under stumps or beneath rock piles. On gained a stranglehold on the walled city's numerous brothels, gaming parlours, and opium dens. Cases are known of foxes killing raccoon dogs entering their dens. They spend the winters in deep dens hibernating. They may also den in abandoned brown bear dens. Giant otters use areas beside rivers for building dens, campsites, and latrines. Ainu hunters caught hibernating bears or bears that had just left hibernation dens. Governor Waite then ordered the closure of all of Denver's gambling dens, saloons, and bordellos. Bars, lounges, nightclubs, and gambling dens are frequently the scene of action. This spawned the many infamous Opium dens. In some regions, bounties are paid for the destruction of wolves and dens.