Purr

Purr
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Purr is a sound made by some species of felids and two species of genets. It varies in loudness and tone among species and in the same animal. Although true purring is exclusive to felids, other animals such as raccoons produce purr-like sounds.

Characteristics

Purring is characterized by a continuous, soft, vibrating sound that is produced by the larynx and diaphragm muscles. The sound is often associated with a state of relaxation, but it can also occur in other situations, such as when an animal is in pain or frightened.

Mechanism

The exact mechanism of purring is not fully understood, but it is believed to involve the rapid twitching of the laryngeal muscles. This causes a sudden separation of the vocal cords, during both inhalation and exhalation, producing a sound that is audible as a purr.

Function

Purring is thought to serve several functions:

• Communication: It may be a form of communication between a mother and her kittens, or between cats and humans.
• Healing: Some studies suggest that the vibrations produced during purring may promote healing and reduce pain.
• Relaxation: Purring is often associated with a state of relaxation and contentment.

Species that Purr

• Domestic cats (Felis catus)
• Cheetahs (Acinonyx jubatus)
• Bobcats (Lynx rufus)
• Genets

See also

• Cat communication
• Animal vocalization

External links

• Purr on WikiMD