This old photo shows what was once an unsettlingly common occurrence in America: multiple horse deaths due to electrocution in thunderstorms.
This six-horse hitch of Percherons owned by the Christy Brothers Circus was struck by lightning on September 1, 1923. They were hitched up for the circus parade when lightning hit a transformer nearby. The wet mud surrounding each horse’s shoes provided a perfect field. In addition to this team, four horses pulling the calliope and eight horses pulling the lead circus wagon were killed and several people also.