BILLINGS — Cattle auctions are a familiar sight in Montana, where crowds gather for profit, but one event in Billings last week was a sale for progress.

The seventh annual Calves to Cure DMD charity cattle auction at the Billings Livestock Commission on Thursday raised funds to help fund research for Duchenne muscular dystrophy, a rare and aggressive genetic disorder with no known cure. It's something 11-year-old Grant Heaton of Worden lives with.

Watch how one Worden family is making a difference in finding a cure for a rare disease: Worden family raises thousands through cattle auctions to fight son’s rare disease

“It's a disease, a muscle disease, where over time my muscles break down to scar tissue,” said Grant. “Every year, we just get donations from people with their cows, do a

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