1. dog whistle
2. Dog whistleA dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle used in the training of dogs and cats. It was invented by Francis Galton; the whistle was mentioned in his book Inquiries into Human Faculty and its Development.
Read “Dog whistle” on English Wikipedia
Read “犬笛” on Japanese Wikipedia
Read “Dog whistle” on DBpedia
Read “Dog whistle” on English Wikipedia
Read “犬笛” on Japanese Wikipedia
Read “Dog whistle” on DBpedia
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