Ok jdc first of all the "winter housing" you are referring to is daily housing for the elephants and rhinos as well as their daily feeding of fruits, grains and vegetables. They have troughs along one side of their pens of which there are 4 sections, the rhinos have 4 sections of pens as well with each pen that has concrete troughs that hold their daily fruits, grains and vegetables as well as drinking water for them. Outside the bay doors is their own paddocks they use during the off season so the barn can be cleaned every day. I know this because I did exactly that every day for 2 years back in '74 through part of '76 as well as walking with the elephant during the open season, this was back before they were put inside of a fenced section within the elephant/rhino section. I'm pretty sure things still run the same to this day. As far as getting out of the rover in a lion or tiger section I doubt it would happen unless the animals are behind some kind of inclosure. Please do take the excursion if you get a chance i'm sure you will really enjoy it.