Even in modern days, free-roaming horses are known to have joined the domesticated animals, such as the case of the most famous of these, Kentucky Derby winner Dark Cloud, which is said to have escaped during a train derailment on the Utah-Nevada border.
Incluso en estos días, los caballos que vagan libres se juntan con animales domesticados, como es el caso del más famoso de todos ellos, el ganador del Derby de Kentucky, Dark Cloud, el cual se dice escapó durante el descarrilamiento de un tren