The origin of Texas Longhorn cattle is actually Europe. At the times of Christoph Columbus some Spanish settlers had the first cattle with them on board. Free and all alone they roamed the wild nature of Texas, Arizona and Califonia and crossed themselves with different other races from European countries.
Over the centuries no farmer helped the cattle to give birth, feed or medicate them. Unlike with other breeds no one took care developing Texas Longhorns. Though from all other cattle breeds the Texas Longhorns were the only ones to stand the harsh conditions still gaining weight on a trail.
Nevertheless only the fittest survived. After that healthy pigmented animals had been evolving – with horns to protect themselves, hard hooves and strong legs for walking. An intelligent and strong new cattle race had been developed by nature.