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A pet fence or radio fence, is an electronic system designed to keep a pet or other domestic animal within a set of predefined boundaries without the use of a physical barrier. A mild electric shock is delivered by an electronic collar if its warning sound is ignored. The system was first invented and patented by Richard Peck in 1973. [1]
Invisible Fence Inc. (commonly referred to as Invisible Fence Brand) is a company that designs radio pet fences for cats and dogs. Manufactured and distributed by Radio System Corporation, the company sells wireless and fenceless systems that were first introduced in 1973. [ 1 ]
Nofence is a Norwegian company that makes GPS collars for farm animals (cattle, sheep, and goats) that discourage them from crossing virtual fences. [1] [2] Oscar Hovde Berntsen has been working on the idea of virtual fencing, as an alternative to fixed electric fencing, since the 1990s. [3] Nofence was incorporated in 2011. [3]
In a virtual electric fence system, each animal has a collar with a GPS unit which is set to produce first an audible warning and then a shock as the animal approaches a programmable boundary. Pet fences to control domestic dogs have been used since 1973, and the first system for livestock control was developed by Peck's Invisible Fence Co, now ...
A typical shock collar. Shock collar used on a riot police dog in 2004 in Würzburg.Two years later, [1] Germany banned the use of shock collars, even by police. [2]A shock collar or remote training collar, also known as an e-collar, Ecollar, or electronic collar, is a type of training collar that delivers shocks to the neck of a dog [3] to change behavior.
Lupinus truncatus is a species of lupine known by the common name collared annual lupine. It is native to the coastal mountain ranges and canyons of Baja California and California as far north as the San Francisco Bay Area. It grows in slope habitat such as chaparral and woodland, including areas that have recently burned.
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