Alsophis sibonius

Alsophis sibonius, the Dominica racer, Dominican racer, or Antilles racer, is a species of snake endemic to the Caribbean island of Dominica.

Description
It can reach nearly a meter in length. It feeds on lizards and small rodents. It rarely bites humans, but may release a foul-smelling (though harmless) cloacal secretion when disturbed.

Taxonomy
Along with Alsophis manselli from Montserrat, it was previously considered a subspecies of Alsophis antillensis.