If you take a pick-up truck to your hiking destination your dog should ride with you in the cab. If this is not possible for whatever reason, purchase a dog carrier and put your dog in it when he or she travels with you. Dogs have died from falling or jumping out of the bed of a truck. Leashing them to something in the bed of the truck is not sufficient, as dogs have inadvertently hanged themselves trying to jump from the truck. Place padding the floor, ceiling and sides of the truck bed for better protection.