A Matter of Circumstance.
Little Joe got Cochise in the episode titled "Cochise," which is the 18th episode of the first season of "Bonanza." In this episode, Little Joe adopts the beautiful but wild horse Cochise after a series of adventures and challenges. The episode showcases their developing bond and highlights themes of trust and companionship between man and horse.
The Oath
Episode #232, Season 7, The Fighters, original air date: April 24, 1966.
The episode aired in 1963 and was titled Marie, My Love. As with all of the Cartwright women, Little Joe's mother met an untimely death after falling from a horse on the Ponderosa.
I could not find this episode.
I don't think it was ever revealed how he acquired the horse.
The beautiful Paint Little Joe Cartwright rod was named Cochise.
In the episode Dark Star, Joe falls in love with a gypsy girl named Tirza. This is probably the episode you are thinking of. Hope this helps!
Hoss and the Leprachauns
Little Joe Cartwright's horse's name is Cochise. It was a pinto horse known for its speed and endurance on the TV show "Bonanza."
This is my favorite episode, #146, original air date Dec. 22, 1963, titled 'Hoss and the Leprechans'.
If you mean Bonanza, I looked up the answers for you. I had heard it before but I forgot. Ben's horse was Buck, Joe's horse was Cochise, Hoss's horse was Chub (lol) and Adam's horse was Sport.