My guinea pig Oswald has a 4 oz water bottle, and it seems like he could go through about 2 a day. I read that sometimes changes in temperature could cause this, and this weekend Iw as away and had a friend watch him and I had the air conditioning on at 73 degrees fahrenheit (22.778 degrees celsius) which is a normal temperature for him, I just wanted to make sure it would be stable for while I was gone. He's had the AC on for him most of the summer as well, so it wasn't out of the ordinary. This water bottle doesn't leak, and I have watched him go to the bottle himself and heard him drinking. I read a lot about it and 8oz doesn't seem like a ridiculously high intake, but it seems like more based on how much he drank previously. I should note also though that he had a much bigger water bottle before, like maybe 4x as big as the one he has now, so it was harder to gauge that, but the one he has now he has had for a few weeks and he usually 1/2 or 3/4 a day. I've only been back for one day to see how much he's actually drinking but I am going to be home all day to see how much he is actually going through. He's acting completely fine in every other way. I filled the bottle up completely at about 1 or 2 am, and then at noon it was nearly empty, so I will see if this is a pattern. I filled it completely up at noon, so I will update accordingly. Has anybody had any similar experiences?