If you have a farm with a work dog, he probably stays outdoors. A lot of folks do still keep their dog outside. Hand crafted travellers has a really cool how to on building your outdoor dog its very own cob house. Such a neat diy project. I am wondering if you could modify it for goats or pigs even.
http://handcraftedtravellers.com/build-your-own-cob-dog-house/