One of the problems with having purely indoor cats is that they lack the stimulation found outside and rarely have their hunting instinct satisfied. Adding in a "Cat run" ensures the health of the cat and gets them out from underfoot when the evening crazies set in.

Must be great, getting out the ladder every time you have to clean up a hairball. :/

If you need a fixed guideway cat transit system means you have too many cats.

I wonder how soon after installation the owners got tired of being smacked from above when walking through the arch.

This is definitely a form of high density that my cats can get behind. They would just love something like this.

I love this. I'll bet the cats' antics are more entertaining than what's on that TV. Perhaps when we settle down in our "forever house," we'll rig up something like this. Unfortunately, we have to keep resale in mind; for un-handy people, this would be hard to undo!

Trust me, you do not want to encourage ceiling cats.