No one ever expects to get hit by a deer, but it can certainly happen, especially this time of year. According to the Insurance Institute for Highway Safety, over 1.5 million deer and car collisions occur every year in the United States. And with October through December being the height of their mating season, deer are very active. They also tend to migrate during this time frame. These factors lead to auto accidents and extensive damage to cars. It is estimated that deer and car collisions cost Americans over $1 billion in vehicle damage each year.