A nice feature to have for your pet is a doggy door. This convenience allows your dog to go in and out of the house at its pleasure. It is best for the door to lead to a secure fenced area. Training your dog to use the door is fairly simple. Using his/her favorite treat to lure through the door several times should do the trick. Doors can be purchased at most pet supply stores. The main thing to consider is that the door needs to be slightly taller and wider than your dog so there is plenty of room to get through.