A few years ago on New Year's Eve, Deanna Quinn's neighbors set off fireworks that exploded right above her Peters Creek property.
Gus, her 15-year-old Arabian horse, "went bananas," Quinn said. He took off running and crashed into a fence.
"He could have hurt me," Quinn said. "He could have twisted an ankle."
A year later, Quinn gave Gus his first doses of CBD, a non-psychoactive cannabis extract that has been touted anecdotally as a pain reliever and a potential medicine for a...