Pseudalsophis thomasi, or Thomas' racer, a species of snake in the family Colubridae.

[2][3][4] Diurnal snakes, active throughout the day with the exception of hot midday hours.

Foraging predators they feed on small animals such as lava lizards, geckos, and possibly invertebrates.

Snakes are mildly venomous enough to endanger small prey items but not enough to harm a human.

Thomas's Racers have no natural predators however they are preyed upon by introduced black rats.