The 34-year-old actor borrowed one of the horses for a ride during a break in filming new movie "Child of God" and left the crew panic-stricken when he failed to return after three hours, reported Femalefirst.
However, Franco eventually returned to the West Virginia base just as search parties were setting out, and said he had had to get the horse to guide him back.
"I've been wandering around for hours. If it wasn't for this horse I'd still be lost," he said.
Franco is not the only star to have been aided by a horse recently. Few days ago, Johnny Depp had said his horse saved his life when he fell from the animal while shooting new movie "The Lone Ranger".