I was taking a transfer from Salmon Id, back to Missoula, Mt, was about 1 am and I was about 30 miles north of Salmon when the truck in front of me slammed on his brakes and the rear end jumped into the air. Before I could do anything there he was, a full grown bull moose lying in the middle of my lane. My partner was standing up working on his patient so I couldn't slam on the brakes with out throwing him into the front wall of the box, so I just straddled it. Even though the ambulance weighs 15,000lbs and is a F-350 truck front end with a 12ft box on the back (4x4) it was still quite a ride, lifted the rear end off the ground. I spent the next day lying on the ground with the pressure washer getting chunks of meat and hair out from under the rig.