The risk of colliding with deer is greater during the October-January deer mating season warn officials at the Ohio Insurance Institute (OII), Ohio Department of Natural Resources (ODNR) Division of Wildlife, Ohio Department of Public Safety (ODPS) and the Ohio State Highway Patrol (OSHP). ODPS reports 23,201 deer-vehicle crashes in 2010, down 7.7 percent from the 25,146 crashes reported in 2009 (24,590 in 2008). There were four fatalities and 920 injuries caused by these crashes in Ohio last year.