I can just imagine a couple of guys in lab coats chasing a cat around the lab to see whether it is stressed when stroked. ....Exactly. A bunch of a—holes who never the saw the puddy before and brought them out to stick the little twerps with needles and started petting them. Figured if they let off gasses that showed they hated the petting it was proof. My big 25 lb. lets off gas, too when I pet him because it’s heaven on Earth to him and he won’t quit letting me pet him. (Until he farts off a pound or so.)