Bats cry in such a high pitch that we cannot process the frequency.
Bats. They are blind and use echolocation to navigate when they are flying. They emit high pitched sounds humans ears are unable to hear. The sound frequency in a human voice is too low pitched for them to hear.
forgive me for answering a question with a question, but WHERE DID YOU HEAR THAT NON SENSE?
Unable to hear.
Bats can hear every thing around them
Most people do not hear the sonar signals used by animals, such as bats or dolphins.
Unable to hear.
Because their hearing apparatus (ear) is not tuned to hear ultrasound.
Deafness is when somone is unable to hear anything.
bat
No, if you are born deaf or become deaf later in life, you are unable to hear sounds. However, some deaf people learn to "feel" sound waves, and therefore giving them some perception of sound.
BATS!
an audience