More deer on the move means drivers should be extra careful on the road. According to Car and Driver , an average of about 2.1 million vehicle crashes involving deer occur in the U.S. each year.

A motorist comes to a complete stop on Route 88 in Wheeling, West Virginia, as a deer crosses the road, Monday, Nov. 15, 2004. Cars crash into deer more than 4,000 times a day.