Dogs can hear sounds of far higher frequency than humans can. The differential threshold refers to the difference between what two organisms, such as a person and a dog, can detect through the same sensory channel.

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The differential threshold, also known as the just noticeable difference (JND), refers to the minimum difference in intensity between two stimuli required for them to be perceived as different, rather than the differences in sensory capabilities between two different organisms.

Dogs Can Hear Sounds of Far Higher Frequency Than Humans