By Melissa Newton, CBS 11 News

ARGYLE (CBSDFW.COM) – Midnite, a four-year-old miniature horse, has a past as dark as his name.

He was brought to Ranch Hand Rescue in Argyle suffering from abuse and neglect, but he now has a bright future.

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“Midnite was in really bad shape,” said Bob Williams, who runs the animal sanctuary. “I would say critical condition.”

Missing his hoof and the lower half of hind leg, even walking was a challenge for the young horse.

“He literally walked on three legs,” Williams said, “and he’s never ran.”

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Williams turned to Prosthetic Care. The Fort Worth-based company created and donated a prosthetic leg, which Midnite put on for the first time Sunday.

“Prosthetic care had never built a leg before, they’d built them for humans but they’d never build them for horses,” Williams said.

What happened next exceeded the expectations of Williams and the rest of the Ranch Hand Rescue staff.

“Our hope was that with a prosthetic leg he would be able to walk and be out in the pasture with the other horses and just enjoy being a horse,” Williams recalled, “When he ran and when he jumped we all cried, it was just the most amazing thing I’d ever seen in my life.”

They now hope the small horse will be a big inspiration to others faced with similar hardships.

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“We hope, whether it’s children with prosthetics, or veterans or adults with prosthetics, that Midnite can be a source of joy for them,” Williams said.