Ultrasonic hearing refers to the ability to perceive sounds at frequencies higher than the upper limit of human hearing, which is typically around 20 kHz (20,000 Hz). While most humans cannot hear sounds above this frequency, some animals, such as bats, dogs, and certain species of rodents, have the capability to detect ultrasonic sounds. These higher-frequency sounds are often used in various animal communication, echolocation, and hunting strategies.
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