Closeable dogloo/dog house?

'Thought I'd ask the dog experts on here. We're probably going to put up a fence soon to cordon off part of the yard and move our two dogs in there when we have company or are gone for a short while. We won't use it all the time, but want to have a couple of dog houses in there. Are there any ready-made houses that you can close off when not in use to keep the critters out?

Plastic crates should work.

I guess you could get a Dogloo door and trace it onto a 1/4" piece of plywood, cut and install to cap it. It won't keep out all critters though.

Get a German Short Hair. Any critter that gets in the yard is toast. My yard the score is Opossums 0 squirrels 0 GSP 6

This is what I use:

http://www.k-9kondo.com/dog-den-2-regular-dog-house-free-shipping/

K-9 Kondo is the only way to go for outdoor kennels. I use the model that utilizes a 55 gallon plastic barrel.