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Old 05-12-2019, 06:27 AM
  #18  
floridarob
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Join Date: Mar 2009
Posts: 11,580
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If the dog has ever been on a wireless fence before, a high pitch sound is the warning sound before they get lit up by the shock collar....obviously if you had the dog since a puppy, you would know whether it was on a fence system, but if you adopted it, it could be from it's previous owners......
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