It could just be change in seasons making it drier in my house with heaters going, but it seems my boys are drinking more water then they were. There is no heater in their room, and it's about 60-65F in here. I have 2 12oz bottles on their cage and they are going through about half a bottle, maybe a little more a day. So 6oz a day for 2, does that seem right? :hmm: