In the interest of saving space, providing a toy for your cat to play in, or just giving in to your cat's desire for more never-ending fun, you should look into these door-hanging cat trees from K&H Pet Products.
Climbing, scratching, hiding, sleeping, and just hangin' out can be equally satisfying to a cat if his condo hangs from a door as when it's free-standing. I like the K&H Pet Products Hanging Cat Condo and the Hanging Feline Funhouse. Instead of wood and carpet, they are made of nylon-backed 600 denier canvas and their floors are made of corrugated plastic. They have lots of spaces to hide and to peak out.
The Cat Condo comes in two sizes, Small (65 x 16 x 16 inches for smaller kitties) and Large (65 x 16 x 23 inches for tiger-size cats). Lots of kittens or a few adult cats can fool around in the K&H Hanging Cat Condo; it's got 5 levels and 7 peep holes.
Here's a view from the inside, the tunnel that your kitty can climb:
When you remove the K&H Hanging Cat Condo from the box and hang it up, it might be wrinkled, but you can steam the material to straighten it out; do not iron. Recommendations are to use a damp cloth to spot clean when necessary.
As you can see, there's plenty of space for a few kittens or small cats in the K&H Hanging Feline Funhouse. The dimensions are 22" x 12" x 70". Like the Condo, the Funhouse is held in place by expandable brackets at top and bottom. It has three levels, two mesh windows, and two open windows.
The Condo and the Funhouse are perfect for homes that don't have a lot of extra room. Just don't be surprised if you suddenly see your cat peering at you from the wall across from your bathroom mirror.
That's the buzz for today!