Ive noticed a day or two ago my snake has been getting into this new habit. And everyday its been doing it more and more, it paces around the edge of the tank right up against the glass and sticks its nose right on the glass. sometimes it tries climbing up. when its not sleeping or climbing it spends most of its day just pacing back and forth the front of the glass. Does this mean anything other than it just wants to get out? is it normal or anything to worry about?