The rattlesnake is a venomous snake known for its segmented tail that produces a rattling sound when shaken. It belongs to the viper family and is found in North and South America, inhabiting a variety of habitats such as deserts, prairies, and forests.

The most distinctive feature of the rattlesnake is its sound warning system, which consists of a set of rattles or keratin rings at the tip of its tail. This mechanism is used to warn potential predators or intruders of its presence, usually before an attack. Additionally, the rattlesnake has hollow fangs, which are foldable and allow the injection of venom.