animal precipitation

The currently favored explanation for animal precipitation involves waterspouts, a special type of tornado that forms over bodies of water. These are capable of sucking up animals in their path and transporting them high up in the air. Because these waterspouts and other types of tornadoes are on the move, when they do eventually break open and release their unwilling passengers, the animals will be far away from their original habitat, hence the appearance of animals raining from nowhere.