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A man in Florida is facing charges of aggravated assault after playing a rather bizarre practical joke involving throwing an alligator through the window of a fast food restaurant drive thru.

Urban ecologist and Professor at the University of Florida, Dr Mark Hostetler told 5 live the prank was "bizarre" but alligators are very common in the area.

Alligators have a "natural fear of humans," he said, but that is subverted when people feed them marshmallows - a favourite treat of the reptiles.