“The electricity would go up one leg of the body and stop the heart and go down and out another leg,” he said. “In an instant, of course.”

The same thing can and does happen to humans, Mr. Jensenius said, but animals are particularly vulnerable because they have more legs and their legs are further apart. The greater the distance between two legs, the greater the chance that electricity will try to flow through them, and the stronger that charge will be.

Though the reindeer were in a herd when they died they did not have to be touching to get electrocuted. They only had to be touching the ground within an area about 160 to 260 feet in diameter from where the strike or strikes hit. The 323 reindeer most likely dropped dead from cardiac arrest where they stood and did not go flying in the air, like in some movies. Mr. Jensenius said that it’s likely the lightning would have struck that location whether the reindeer were there or not.