My 1st cat was like that, but Meaouw Maow will lie flat on his back and appreciate anything. I keep the work light. Just make sure to work clockwise in the abdominal area. He's neutered, but hasn't formed a fear/attack response to belly petting and does as best he can remember when Perrine shows up in heat. It seems to help. I just don't see him attack anything. He sleeps facing my door and gives me "high 5" when fed. He's a good meat loaf.
catz & tummies