Shortly after buying my coach 13 years ago, I was just tinkering and pulled the small panel to the left of the steering column that holds a few switches and a vent outlet. Amongst the wires hooked to the back of the light switch was the dry skin that a lizard had shed at some time previous. Given the dust on it, I knew that it had been a length of time and that it was unlikely that the lizard was still in the coach. The skin was about 10" long.
While it has been 13 years, I still have NOT told my wife about it!! I do like her to travel with me.
I think I will go check the underside of my coach for entry points!