The Puppies have a "Doggie Door" arrangement via the basement ... The stairwell is exterior, but roofed, and there are regular doors at top and bottom, one accessing the back yard, the other the basement exit/entrance. Each door has its own dual-flap "Doggie Door", which comprises what we call "The Puppy Lock". As long as the upper door's flap is not blocked by snow, they have free access to the back yard if they desire it, without requiring human intervention. The back yard, fully fenced, strikes them as a less desireable place to be than outside the fence, but if they really want to be outside the house, they make the choice.
Frank (The Husky) spends most of his "Behind Doors" time outside, even in the coldest, snowiest weather. He's not real fond of rain, which is good, 'cause his luxurious double coat takes forever to dry ... and, well, he's a pretty husky fellow, and nothing quite smells more like a lot of wet dog than a lot of wet dog. From our own bathroom window, we can see the upper basement door, and much of the back yard. When it gets VERY cold, the yellow snow becomes proportionately less far from the house.
Frank, however, may "Disappear" during a heavy snowfall. A shout of his name will bring a sleepy head up out of a snow mound. If he wants to come in, he'll get up, stretch langorously, yawn, look around a bit, shake off energetically, then saunter to the door and come in. If he doesn't want to come in, he sort of "Gruph"s acknowledgement, turns away, and intently gazes off in some other direction.
The Ponies have pretty much free access from their stalls to the fenced paddock, and the barn isn't heated. They and the chickens do fine with just shelter from the elements, and wander in and out as they please. They're fat right now, and their coats are thick and shaggy. A real blizzard always drives them in, but heavy rains don't necessarily have the same effect. They are noticeably unfond of nearby lightning, however. That sometimes results in fence repair or carpentry.
Oh, yeah ... that "Confining", fenced-in back yard The Puppies don't particularly like ... its just under 2/3 of an acre. Ingrates. Humph.
timber