If you have multiple cats, they may fight. For Jim Cox and Gary George, their solution was to build their version of a popular sliding barn door at the top of their second-floor stairs.

Dubbed a contentment door, the door kept the cats apart so everyone could live in the same house while providing separate space. The door also comes in handy for separating cats from house guests as well. So if you need a way to get multiple cats living together, consider a door to separate them. After all, keeping humans apart has gone a long way to helping them stop fighting each other too.

To learn more about how a cat door can keep cats from fighting, click here.