My hog just shed a week or so ago but he doesn't seem as relaxed as he used to. He used to move around under the substrate etc. But now sometimes he will sit in the same spot whether on the cold side or hot side for a day or so at a time. The hot side has a toilet paper roll cardboard piece as his hide, covered in the shaving, cold side has a water bowl.
I use a regular heater that is used for people's back etc for heating. Is this normal behavior or should I think about changing the setup?