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Many animals react differently to different whistles, each has different hearing abilities, but most animals hear quite clearly frequencies that defeat the human ear. Invented by Acme in 1935, the Acme Silent Dog Whistle is the perfect dog training whistle for Town or Country, close or distance work. Adjustable frequency range from 5400 Hz. to 12,800 Hz. Tuned to your dog's hearing.Used for training dolphins and killer whales at Sea World it is also famous for its effects on cats,horses, mice and even bats! Brass Whistle with nickel plated (silver) finish. Made in England. According to the manufacturer, this whistle is effective up to 2 miles depending upon wind, weather, terrain etc. *** FREE Lanyard is included ***




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