"ZOE, an Alsatian police dog attached to the Sydney (Australia) Police Force, is shown performing tricks in response to commands issued to her via short-wave radio. A miniature radio receiver was strapped to the animal’s back and a police officer whispered instructions into the microphone of a transmitter located some distance away. Hearing her master’s voice, Zoe dutifully carried out the commands."The dog is not radio controlled in the technical sense. The dog was trained for 2 years by Constable Denholm with verbal commands like any other trained dog. It's just that in this case the commands are issued by a short wave radio strapped to the dog. Zoe probably recognizes Constable Denholm's voice, but verbal commands. In another demonstation Zoe climbed up and down ladders, turned a faucet on and off, took off her collar, and fired a revolver. For the record there was not a gun strapped to the dog.
For these demonstrations Denholm, strapped a miniature shortwave radio receiver and a battery pack on the back of Zoe. Then from a shack fifty yards away he issued commands into a microphone connected to a portable shortwave transmitter. The fame lasted perhaps two years, what happened to Zoe after that I have no idea.