ANCHORAGE (AP) — Musher Nicolas Petit lost a huge lead in the Iditarod Trail Sled Dog Race on Monday when his dog team refused to keep going after he yelled at one of the animals.

A dog named Joey had been fighting with another dog on the team and jumped it during a break on the way to the Bering Sea checkpoint of Koyuk.

Petit told a reporter “I yelled at Joey, and everybody heard the yelling, and that doesn’t happen. And then they wouldn’t go anymore. Anywhere. So we camped here.”

Several mushers passed Petit’s team on the trail, erasing his five-hour lead in the race.

The checkpoint is 827 miles into the 1,000-mile race across Alaska.

For Petit, it’s another bad memory from the stretch between the Shaktoolik and Koyuk checkpoints.

He was in command of last year’s race when he got off trail during a blizzard and lost the lead. He wound up finishing second.