"Toby the Cowsitter" is an episode from the Disney Junior series Sheriff Callie's Wild West, which aired on January 29, 2014.
Plot
Toby earns money to buy milkshakes from Ella (a free cow) by promising to keep slave cows tied up for the farmers attending a green bean convention at Red Gap, but fails to keep up with his promise in taking care of his charges. Callie and Peck teach Toby that he can't forget when he makes a promise (which is as bad as breaking that promise).