Can a puppy live happily on a glass-enclosed porch in cold climates?

As long as the doghouse is heavily insulated and she has thick bedding inside, and the door isn't open to where the wind blows in, it should be fine. A good option may be to drape a heavy blanket over the door at night to stop any drafts and improve the insulation. Thanks for asking Petco Pet Education Center, formerly Petcoach!

Great question! I would keep your puppy indoors in cold nights. Young puppies are not able to regulate their body temperature, and it would be best to keep it indoors where it is warmer. You can keep the puppy in a crate indoors to keep it from getting into things and having accidents in the home.

If the wooden dog house is insulated, and there is a lot of padding inside and the door is covered, that would be ok during the day but I would avoid it at night. Make sure that the balcony has a secure border so that she cannot get through the barrier /slip through or under the bars and fall or escape. I would also not recommend it if you're on a lower floor where someone could potentially try to snag her. Thanks for asking Petco Pet Education Center, formerly Petcoach!

If his dog house is clean, and insulated then he should have no problem sleeping outside. Make sure you regularly clean it and wash his bedding to keep parasites at bay and do regular flea prevention.

You can move everyone indoors and confine her and the litter to a small, warm room or you can insulate the dog house and protect it from the elements. I would hesitate to recommend placing a heat source for fear of fire or burns.

If he is happy in the garage and it is safe for him to be there without being supervised (beware of antifreeze and other toxic chemicals, electrical cables etc) then i recommend creating an insulated indoor kennel in there. Styrofoam sheets, old duvets and bubble wrap can all help to insulate bedding areas

It really depends on how cold it is outside, and how well sheltered the area is. I would make sure the area surrounding the house is shielded from the elements so rain and snow can't get into the house, and that there is an overhang of some sort so Kirby can get to food/water/potty safely without freezing his feet. You can also put a thermometer inside the house on a very cold day and see how warm it stays inside of it. If it's cold enough to freeze paws or bodies, it's best to keep Kirby inside. If it's too cold for him to be out but he isn't fully allowed to run around the house, crate training or keeping him in an easy to clean area such as a laundry room can make sure he stays warm enough inside without getting into trouble.