My Ball just opened his mouth a few times, like he was yawning, and he's also been very active (looks like he's searching) He's also been staring at the top a lot (reflective tinfoil) and licking the air most of this evening.
I believe it's feeding time!
As I said in another thread, he's about 20-22inches (60cm), and 3/4=1" in diameter (quick measure, haven't handled other than a few brushings on his back)
The pet store I bought him from said 'Large feeder mice' -- I have never seen one but he was being sold as a baby, and from what I've read here it seems like I should be feeding him something smaller.
Any suggestions??