I believe it was a buckskin
No a Piston is not a breed of horse.
The breed of horse is a Thoroughbred, it is the horse that the cars are named after.
a yealand pony or horse is a breed of horse
It seems that the buckskin colored horse that Ben Cartwright rode in Bonanza was the same horse that was used by Marshal Matt Dillon in the series Gunsmoke.
Hoss Cartwright's horse in the television series "Bonanza" was a Palomino named "Charger." The breed is known for its distinctive golden coat and white mane and tail. Charger was a loyal companion to Hoss, played by Dan Blocker, and often featured prominently in the show's many adventures on the Ponderosa Ranch.
The largest breed of horse tends to be the percheron but other large horse breeds are drum horse, shire, clydesdale, Friesian, or really any draft breed.
A pony. Even if the breed's a horse breed not a pony breed.
Eric "Hoss" Cartwright's horse's name was Chub.
Quarter horse.
A Matter of Circumstance.
Hoss (Horse - as in big as...)
Ben Cartright