What unique physical structure identifies snakes belonging to the Genus *Crotalus*?
Answer
A rattle composed of interlocking keratinous segments
Snakes in the genus *Crotalus* are uniquely identifiable by the presence of a rattle made of interlocking keratinous segments located at the end of the tail, which they use for defense.

Related Questions
To which Kingdom does the western diamondback rattlesnake belong?What feature characteristic of the Phylum Chordata is present during the embryonic development of *C. atrox*?What is a defining physiological characteristic of reptiles in the Class Reptilia?Which reptile Order includes all lizards and snakes, distinguished by their overlapping keratinous scales?What specialized heat-sensing organs are present in members of the Family Viperidae, such as *Crotalus atrox*?What unique physical structure identifies snakes belonging to the Genus *Crotalus*?What is the likely translation of the specific epithet *atrox* in the scientific name *Crotalus atrox*?Which taxonomic rank is immediately superior to the Family Viperidae in the classification hierarchy?What is the general global conservation status listed for *Crotalus atrox*?What taxonomy ID number is associated with *Crotalus atrox* across different scientific records like PubChem or UniProt?