Electrified fences; Radio-frequency receivers; Electronic collars to train animals; Wearable global positioning system (GPS); Global positioning system (GPS) apparatus; Electronic animal identification apparatus; Bark control devices for training dogs; Clickers for training dogs; Electric bark control dog collars; Transmitters of electronic signals; Apparatus for transmission of communication; Electronic animal confinement unit comprising transmitters, electrical transformers, wires, and rece...