Humans often build “houses” for domestic animals, often resembling smaller versions of human domiciles. These include bird-houses, hen-houses/chicken-coops and doghouses; while housed agricultural animals more often live in barns and stables. Doghouses are often used when the dog is outdoors in the garden, and on areas around a farm where the dog guards the possessions of the owners from unwanted/unexpected people or animals. A doghouse is made of insulating material (often wood) to prevent loss of heat except for a front opening where the dog will enter. The roof is almost always waterproof material. The roof of a doghouse is built to prevent snow or rain from collecting. Often, the owner of the pet should be able to open or remove the roof.