So I have a question that may be a bit silly or even stupid. Do guinea pigs sleep with their eyes open? We've had Oreo and Cuddles since September '09, and Ash and Nutmeg since May of this year. In this time, we have seen them resting, and sleeping, I think. The reason I am not sure they are sleeping is because their eyes never completely close! I mean their little eyes close about 1/2 way to maybe 3/4, but that's it. So do I have bizarre little guys on my hand, or do they just sleep with their eyes partially open? I've been too chicken to ask, but since I have not seen it mentioned elsewhere, I figured now is as a good a time as any lol. The only thing I can think of is that it may be a trait from when they were all in the wilds and they are generally easy prey? Can anyone please help solve this mystery for me? I'd appreciate all the help. 