Ridleys Racer, cave snake in Thailand February 5, 2010 500 × 203 Ridley’s Racer – Cave Snake – Not Venomous Othriophis taeniurus ridleyi. Ridleys Racer. Non-poisonous. Lives in caves, eats bats. Ridleys racer is a beautiful 2 meter long snake that lives in caves and catches bats flying in mid-air. They are non-venomous and protected by Thailand.