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Typically, these fences are 2.4 metres (7 ft 10 in) tall and send high voltage electric pulses through the palisade at a frequency of 1 Hz (one pulse per second). Palisade electric fences are used in most countries, particularly where there is little vegetation to short-circuit the fence or where the costs of security personnel are high in ...
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.
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 ]
The pulse-repetition frequency (PRF) is the number of pulses of a repeating signal in a specific time unit. The term is used within a number of technical disciplines, notably radar . In radar, a radio signal of a particular carrier frequency is turned on and off; the term "frequency" refers to the carrier, while the PRF refers to the number of ...
When it comes to calculating a dog’s age, most go by the well-known formula that "one dog year equals seven human years" – however the truth is, this isn’t accurate. It's not as simple as a ...
The top end of a dog's hearing range is about 45 kHz, while a cat's is 64 kHz. [3] [4] It is thought that the wild ancestors of cats and dogs evolved this higher hearing range in order to hear high-frequency sounds made by their preferred prey, small rodents. [3]
Smelling these things makes dogs feel secure and safe; it's one of the strongest bonds they have with us and is one of the reasons they always want to be near us.
Veterinary Information Network: 5 Steps to Successfully Potty Train Your Puppy or Adult Dog The Dog Trainer’s Complete Guide to a Happy, Well-Behaved Pet, by Jolanta Benal, 2011
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