mexican west coast rattlesnake or mexican green rattler (crotalus basiliscus), venomous snake

alethinophidia anapsida anatomy archosauria basiliskenklapperschlange chordata cincinnati concept crotalinae crotalus basiliscus diapsida effect face germany lacertilia lemker lepidosauria looking at camera mexican west coast rattlesnake green rattler nature one animal pit viper pitviper reptile rolled up sauria serpentes snake squamata venomous vertebrate viperidae brown closeup head individual poison poisonous single wild