Since I don't have the game quite yet, can someone tell me how I can keep large, tropical reptiles in a cold climate? Does the temperature change in indoor enclosures?
As far as I know, there are certain reptiles (tortoises and crocodilians) that need outdoor enclosures. A heater within their enclosure, set to the correct temperature, should work. As for iguanas, they're already in indoor enclosures so no need for heaters. I personally have not done any large indoor enclosures for the tortoises and co., however.
You can actually keep reptiles outside in cold climates, as long as you have heaters covering the entire exhibit set to the required temperature of the reptile.