My two appear to be fartless felines these days, Lexie was quite a trooper when she was young, but not a peep these days, Ash has always been the silent type, I do remember oneday he let off a beauty, it made a noise, I was cracking up as he was so puzzled himself to what was happening from his rear end, I think he got a fright, so no use blaming the cats around here, they are not loud and proud.