I Hit one on my way to work last march. He was right in one of my hunting areas. I couldn't stop in time and nailed him square. I felt ok, and the truck looked ok, so I just went to work. The next day I could hardly walk and found all kinds of damage to the truck. I should of called the insurance company but didn't. The doc said I tensed up and strained some back muscels at the impact. the way it felt, I thought i dislodged a disc. The worse part was, it was a huge buck with base's like coke cans, but being march they only came up a couple inch's. I thought of two real big bucks we were hunting in that area last season, I have seen neither yet this year.