I hope there is wilderness outside that fence, because it is also possible that the horse will end up on the motorway and get hit by a car, and I wonder how you would feel then. I think it has enough space to trot around and roll around, and this is what horses like this do. Given their appearance and breed, the others will also be used to snow. Let's assume the best and hope that the horse is enjoying itself and will most likely return home. In that respect, they are no different from dogs: loyal, wonderful animals.