whip snake

US /ˈwɪp ˌsneɪk/
UK /ˈwɪp ˌsneɪk/
"whip snake" picture
1.

a slender, fast-moving snake, typically of the genus Masticophis or Demansia, found in arid regions of North America and Australia.

:
The desert hiker spotted a long, thin whip snake slithering across the sand.
Despite its speed, the whip snake is generally harmless to humans.