Two people and a dog had to be extricated from a vehicle in Redding Saturday night after a car slid off the road and down a culvert.  West Redding Volunteer Fire Department responded to Church Hill Road Saturday night and took about half an hour to free the occupants.  One person was transported to Danbury Hospital for treatment of minor injuries, one person refused transport.  The dog appeared uninjured.  Redding Fire & EMS and Dodgingtown Volunteer Fire Company provided mutual aid.