What type of dog was jack the wells Fargo dog?

Jack, the Wells Fargo dog, was a mixed breed, often described as a terrier. He served as a mascot for the Wells Fargo & Company during the 19th century, symbolizing the company's commitment to service and reliability. Jack became famous for his loyalty and adventurous spirit, accompanying stagecoach drivers on their routes. His legacy is celebrated in the history of the American West.