The mark consists of The mark consists of a repeated ‘pspsps’ sound, produced vocally by a human mouth. The sound is characterized by a series of short, rapid, and slightly aspirated ‘ps’ syllables, typically used as a cat-calling cue. It is played at a medium pitch, with each repetition spaced by a fraction of a second, creating a continuous rhythmic effect. The sound is widely recognized for its ability to attract and engage feline attention.