Runner dogs don’t like to be restricted in containment spaces. Among the large variety of existing dog breeds, many are especially bred for their physical features, like endurance and speed, and are used for hunting or sport purposes. Dogs are also intelligent animals and when they want to get free, they are able to from any fenced in or containment area. It can be quite an odd job and also very expensive to build a fence around your yard so that you establish a place where to contain your dog and this physical fence cannot even guarantee your dog will not find its way out. In present times, technological development allows dog owners to create safe areas to contain their pets, without the need of building a material fence around their yard. Though it is a complex system utilizing modern technologies, the electronic dog fence was designed to be very easy to use by the dog owner.