I thought it was ears too!
I'm letting my furry babies (rats) occassionally nest in them ... actually, that's FAR more comfortable then one might think. If they happen to munch on them a bit too, I'm not going to mind too much (well, except for the fact that they're usually REALLY expensive ... except I've got a friend who works at the local place, and there was a deal/sale at the time... yeah

)