I made a mat for the 2 dogs- beagle and pug because they were trying to fit together in a small dog bed. It fell apart in the washer after washing it one too many times. The mat is great- it has a cushion foam from Wal-Mart with a cover that comes off for the washer, but the whole thing fits in the washer. Crouton (the pug) will wait for it to come out- she cries when it's in there.
2 weeks ago we bought a BIG one from Sam's Club- figuring they will want to be together. The pug is on it all the time. The beagle likes to lay on the couch- but she's only allowed on a blanket.
At night they go in their crates. They have blankies in there too.