A wrangler is an individual involved in the process of taming, controlling, and handling various animals, specifically horses. Traditionally, this process involves herding cattle and bringing horses in from the paddock. Wranglers often work for other cowboys or tourists who want to ride on North American ranches. Variations of wrangling include managing herds, dude-wrangling, rodeo, and managing horses as a part of stunt work in the film industry. Wranglers are also considered a subcategory of cowboys, being responsible for herding horses rather than cattle.

Source: Wikipedia