Sam Toft - The Doggie Taxi Service Canvas. Welcome aboard the 'Doggie Taxi Service,' all pups and canines welcome! Talented British artist Sam Toft has created a unique and charming illustration in this fun-packed canvas print. Ernest Mustard can be seen, happily riding his bicycle with podgy companion Doris and her two friends - Dalmatian, Hattie and Scottie dog, Precious. Trailing behind them are make-shift wagons filled with content hounds - if you are an art lover or simply an animal fan this sweet print would bring charm to any living space.