These are good for things like shelters and places that need more room to keep their cats. They would also be useful for small animals such as chinchilas, birds, or ferrets.

Pros: These are good when you need more room.

Cons: Not easily mobile.

These are at some of the local pet shops when they sell kitties. They are convenient and can be used at the shelters when there is no room left.

Pros: Easy to clean.

Cons: Doesn't look to comfortable.

These are very good for a shelter to have on hand. When they don't have enough room to put the cat, this is a very good option for it.

Pros: These are good for cats when you don't have enough room in a shelter.

Cons: They are hard to handle.

I KEEP KITTENS IN THIS WHILE I AM AT WORK.
THEN THEY GET OUT. THEY REALLY SEEM TO LOVE IT. IT IS GOOD FOR AN ADULT CAT ALSO.

Pros: I LOVE THIS PEN FOR KITTENS

Cons: NONE

We bought this playpen when our previous cat was sick and had to be confined while he recovered. It's a nice size and the height is a nice feature, as cats like to climb. The plastic base is easy to wipe clean, but the groove near the edge always collected litter dust. The groove was difficult to clean. The wheels made it easy to move for vacuuming around it. It was easy to set up and collapses again very easily. There are two doors...an upper and a lower. I only ever used the lower door. It served its purpose well with us.

Pros: Ample space, including height

Cons: Groove around edge of plastic base is difficult to clean