I agree with Shelteez2.

I would get a crate that will be big enough for an adult. Some of the wire ones come with dividers so you can make the inside the size you need now and expand the space as you need it. Wire cages can be covered with a sheet if desired, or even a blanket for warmth. Sometimes a cover will calm an excited dog.

I have the airline carriers for my big dogs, and they like to hide out in them. I got the carriers to transport dogs in the back of the truck. When I was storing them in the house between trips, my 12 & 13 year old rescues decided they were perfect spots to snooze.

Mary