[Massive]

My Aunt had a cat, a purebred silver tabby, called Rigby, who was ever the gentlecat, he would fart in his sleep, wake up, glare at my Aunt and then stalk out the room thoroughly disgusted...
My current cat also farts, and when she's awake and it happens, she stares at her arse as if to say "Well what the f*ck was that!?!" then turns to look at me like I can make her understand what just happened.
I'm not sure which is worse though, dog fart or cat fart, cat farts tend to be fairly fishy, but a dog we had when I was a little kid could clear the entire ground floor of the house when he'd been given a bone!