Porky and Teabiscuit (1939)

Porky Pig is sent out by his father with 1100 spending money for help on the farm unfortunately he accidentally spends it on an auction for a sickly brokendown race horse known as Tea Biscuit Porky shapes him up for a race although Tea Biscuits attention is diverted to a trombone However a balloon pop assures that Porky wins with Tea Biscuit and gets the reward