It is vital that the doorbells are easy for your pooch to use and that includes them being at a height that makes them easy to operate. Hanging bells are attached to a door handle and if the door has a very high handle it is possible that they will be out of reach of smaller dogs. If this is the case, you may need to choose an alternative type of bell. However, many hanging doorbells are adjustable and reach almost the floor on most doors.\r