GORHAM, Maine — A rare botulism outbreak has killed 23 horses in the past month at the Whistlin’ Willow Farm, according to the state veterinarian.

There are no signs the animals were cared for improperly, Donald Hoenig told the Portland Press Herald last week. Another 40 to 45 other horses at the farm were not sickened.

The veterinarian said no other unusual deaths of horses had been reported recently to his office. READ MORE…