When Vivo was born, folks from the Corolla Wild Horse Fund knew something was wrong with the colt. Suffering from a genetic condition that prevented him from walking properly, it was clear that he would quickly wear down his hooves, leaving him crippled.

To save the colt, Vivo and his mother, Mimosa, were removed from the herd and taken to a rehab center.

The condition the colt is suffering from is easily corrected and initial reports indicate Vivo is doing very well. However, neither Vivo nor his mother will ever return to the wild—once a horse is removed from the herd, it cannot go back.

The Corolla Wild Horses are an extraordinary part of the Outer Banks experience, but there are concerns about the genetic diversity of the herd. According to Karen McCalpin, the Executive Director of the Corolla Wild Horse Fund, there are only 101 horses left in the herd and all of them are descendants of the same mare.

There is legislation pending in the US Congress that would allow three mares from the Shacklford Banks herd—the closest genetic match to the Corolla Mustangs—to be brought to the Outer Banks, but US Fish and Wildlife, citing concerns about the damage foraging horses would do, is opposed to the measure and the bill is currently languishing in committee.