The Monkees S01E08 - Don't Look a Gift Horse in the Mouth (a.k.a. Gift Horse)

There's a horse in the house when Davy takes in a young boy's horse. Chaos with the landlord and a veterinarian breaks out! The boys must figure out a way to make sure the little boy is able to keep his horse, and it includes farm work and Davy acting as a jockey.