When a creature is swallowed whole in Pathfinder, it can attempt to attack the swallowing creature from the inside to cut its way out with a light or natural weapon. The armor class is 10+1/2 nat armor bonus. My question relates to the natural damage reduction of a creature having some effect on the inside.
Say for example a creature has a DR 10/cold steel and swallows my character. If DR applies on the inside, it would make it much tougher to cut ones way out of the beast. I'm about to use a monster with swallow whole and DR in one of my games and I would like to know how this would work together.