My Luckman was the main "circular" cat. Sometimes Sara is but haven't snapped a pic of it yet. She wakes up easily. The kittens always stretch out, I swear they are part ferret, they are so long. This photo was taken on his very last birthday. Took lots of pics that day Very glad now too.
And I did find one with the boys, when they much tinier than they are now. Does it count if it's two of them in a circle? Btw, only one of them fits in this thing now (and just barely!).