I live in Winnipeg, Canada and it is gets pretty cold here. I know sphynxes are indoor cats but I would like to take mine out in nice weather on a harness once in a while, but I'm afraid that he might bolt every time the door opens after that. I have an indoor cat that has never been outside (it's my mothers), therefore he is disinterested in venturing outdoors. I've heard that once a cat gets a taste for the outdoors they will try to sneak out.. and I'm worried because it can get as cold as -40 Celcius here. Should I take him out at all?