I never knew what a dog box was until I saw someone in the area post one for $20 on Marketplace. I offered $15 and they took it and helped get it into the truck. Those things are heavy! My understanding is they aren't dog houses, but called dog boxes for those that haul their hunting dogs around.I move my broody hens into dog boxes as the constant disturbances in the coop and run is not nice for the broody hens my thought. In the dog box individually they are quiet, with food and water and they are free to go out whenever they like.
Also I can easily clean the dog boxes when the broody hens are outside. They seem to like the dog boxes, and they all raised their kids in those. After they done with all the raising chicks, they often return to the dog boxes. I think they like it.
Anyway, here's our dog box. Hubby tore it apart and rebuilt it. The front side is hinged. We're using it for in a grow-out pen in our parrot's aviary.