There is no way I would leave my pets in a burning house - or even a collapsed one (I live in California where we have earthquakes all the time). I would definitely go back in to get them if they couldn't get out alone - we have pet doors in both of our homes - and luckily we have never had a fire but at the first tremor every dog we have ever owned races out their door to the yard. They're part of our family - how could we ever leave them??