【實用生產應用app】Dog Whistle|最夯免費app

Dog trainers use dog whistles to get a dog’s attention. Some think different breeds react to different high frequecies. Smaller dogs are more sensitive to higher frequencies.

You probably can’t hear a dog whistle because the frequency is too high. Dogs hear higher freqencies better than people do. That’s why dog whistles seem to be silent. High frequency sounds usual travel further than voices.

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