Prewalski's horse.
The answer is in the name, Mongolian horses live in Mongolia.
MONGOLIA also known as the Asian Wild Horse or Mongolian Wild Horse, or Takhi
The only true wild horse is the Przewalski's horse.
In Australia, a wild horse is known as a brumby.
Wild Horse
The scientific name for the Przewalski's wild horse is Equus ferus przewalskii. It is the only remaining truly wild horse species in the world.
Clydesdales don't ave a scientific name, because they are a single breed of horse, but the scientific name for horses in general is Equus Caballus.The Clydesdale horse, being a single breed of horse, does not have its own scientific name. The scientific name for the species horse, however, is Equus ferus caballus.
"Superstar" was the real name of the black horse that James West rode in the 1960s TV series The Wild Wild West .
I don't approve of the name 'feral' but another name is Brumby, the wild horses of Australia.
Mustang.
buckshot
All horses breeds with the exception of a few wild horses carry the scientific name of Equus ferus caballus. The Tarpan(Eurasian wild horse) is Equus Ferus Ferus. And the Przewalskis horse is Equus ferus Przewalskii.