A popular sport among humans these days is the Spinning®-brand indoor cycling class.
Well, there are regularly spinning classes on the stairs of this house.
Mac the Merkitty is especially fond of chasing toy mice around and around in circles on the stairs, as you can see from these images.
In fact, once she gets going, she clears the stairs of any other cats.
How she manages to spin around and around and not fall down the stairs or regurgitate her last meal is beyond my ken. Then again, she is the Merkitty.
(c) Copyright 2014, PeggyMalnati. All rights reserved. Photos my own.