Mine are indoors, though I wouldn't dismiss the idea of an outside dog if it were a working dog and it had access to an area out of the elements. I don't know how you do it with all those young puppies, especially with most of them being large lab mixes. If I were going to adopt a dozen dogs, I'd probably choose older dogs who have less of a chance and don't need as much attention. 12 adults is easier than 12 puppies. I take it they aren't really housetrained then? So they really aren't very adoptable if you for some reason need to rehouse them. I hope for your sake they never get in a fight when left together in this barn, or are these kennels closed at night? Are the pugs able to hold their own with these big dogs around?