|Picture from Paranormal Animals of North America|
The Deathrattle (Crotalus nex) is the Awakened form of the diamondback rattlesnake (Crotalus adamanteus). It grows up to 2 meters in length, and is faster and more aggressive than its progenitor.
The deadly poison of the Deathrattle is incredibly toxic, and the Deathrattle has been known to spit the venom up to 2 meters away. It lives throughout the southern badlands and deserts of North America.