Charles Paul "Chuck" Eisenmann was an American animal trainer and owner best known for his work with London the Dog, the iconic canine star of the television series The Littlest Hobo. Chuck's journey into animal training began in the 1950s, when his passion for working with animals, particularly dogs, became evident. The Littlest Hobo followed the adventures of London, a wanderer with a knack for helping people in need. Chuck's exceptional skills as a trainer were key to London's ability to perform a variety of tasks and stunts, showcasing the duo's close bond. Under Eisenmann's guidance, London became a beloved character, embodying loyalty, intelligence, and compassion.