How Far Can Dogs Hear?
Dogs can hear up to 4 times farther than humans can. This means that if you hear a sound from 20 feet away, a dog can hear the same sound produced at the same volume 80 feet away. Humans can hear a sound as far as 50 to 100 feet away while dogs can hear as far as a quarter-mile or more.
Dogs not only can hear farther, but they can also hear better than humans. Generally, a human's hearing range is 20 Hz to 20 kHz whereas a dog's hearing range is from 67 Hz to 45 kHz. A dog whistle is specifically designed to produce sounds that are higher than 20 kHz which is why humans can't hear a dog whistle being blown while dogs are sensitive to it.
A dog's hearing is primed for hunting and avoiding danger. Their ears have 18 specialized muscles that aid them in their hearing by tilting and rotating for more accuracy. Their ears are also shaped to receive sounds more efficiently like how humans would cup their hands to hear better.