Mexican Lance-Headed Rattlesnake or Lance-Headed Rattlesnake, <i><a href="//commons.wikimedia.org/wiki/Crotalus_polystictus" title="Crotalus polystictus">Crotalus polystictus</a></i>, Family: Viperidae, Location: Germany, Scheidegg, Reptilienzoo
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>