spider tailed horned viper, pseudocerastes urarachnoides, is probably the rarest viper with a spider tail ending

animal arachnid camel camelspider camouflaged closeup cryptic dangerous detail ending fauna horned iran mountains portrait predator probably pseudocerastes rare rarest reptile snake special spider spidertail spidertailed sunspider tail tailed unique urarachnoides venomous viper weirdest wildlife zagros