Walt Disney's Giant Comics #422

Scrooge brings Donald and the nephews to his ranch at roundup time so that he can teach them the cattle business. Scrooge's cowboys are fleeing from Snake McViper's rustlers, so the ducks take over their chores. McViper's men get the best of the them—and get Scrooge's cattle—until two of the nephews disguise themselves as a girl and trick McViper's men into eating their abominable cooking.