Wild LA by Natural History Museum of Los Angeles County

Author:Natural History Museum of Los Angeles County
Language: eng
Format: epub
Publisher: Timber Press
Published: 2019-03-14T16:00:00+00:00

THE RATTLESNAKE’S RATTLE

Rattlesnakes want to go unnoticed, but if a predator gets too close, a rattlesnake will use its rattle to warn off the larger animal. The rattle is made of keratin, the same material in your fingernails. When a rattlesnake is born, it has a tiny prebutton, which is basically a cap on the tip of its tail. During the snake’s first shed, this prebutton is replaced by a button, the first segment of the rattle. With only one segment, these young rattlesnakes can’t produce any sound. Each subsequent shed produces another segment, which can then slap against each other and produce sound. It takes a few sheds before a rattle will produce the loud characteristic warning.

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