Abstract
Advanced snakes (superfamily Colubroidea) constitute one of the most diverse groups of terrestrial vertebrates worldwide. It is comprised of more than 2,500 species and includes the front-fanged venomous families Viperidae (e.g., vipers) and Elapidae (e.g., coral snakes), and rear-fanged venomous species in the family Colubridae (e.g., colubrids). In the Neotropical region, where their di…