Placing a dog house on a cement surface or bare ground isn’t a great idea. This arrangement makes for a bitterly cold living environment in the wintertime. The best outdoor dog houses feature a raised wooden floor, side panels, and a slanted roof. Expanded polystyrene foam between the panels keeps the cold air out while retaining warmth. Wood is a far superior insulator than plastic, providing a robust and stable structure. Choosing a cedar wood material provides a natural deterrent against fleas and ticks.