I had mine out for about 30 mins in the snow last month, they loved it! Jacob was living outside last year, then i got Bella in Oct and was told she couldn't live out side till it warms up. So once i had bonded them I decided to let Jacob live indoors too. As soon as it gets warm I will put them out for good I think. But I have a cat flap and as long as myself or hubby is around they come and go as they please. (As long as its not cold or raining.)