Kingston, the World Cup mount and Olympic alternate for U.S. dressage rider Leslie Morse, underwent colic surgery last week due to a displacement of the large colon. He is expected to fully recover.

According to Morse, the 18-year-old Dutch-bred stallion was dehydrated due to the extreme Los Angeles, Calif., heat, which brought about the colic.

“We were lucky that we caught it late that night,” said Morse. “We got to the clinic around 2 a.m., and he was in surgery by 4:30 a.m. It was a very long day.”