Mondasian horse

A Mondasian horse was an equine species from the planet Mondas, visually identical to the horses of Earth.

By the time that the Fifth Doctor and Nyssa visited Mondas, such horses had been augmented with cybernetic parts and were ridden by the partly cyber-converted police officers on Mondas. (AUDIO: Spare Parts)

Horses were also present on the Mondasian colony ship visited by the Twelfth Doctor and Bill Potts. (TV: The Doctor Falls)