6. Common wolf snake (Lycodon capucinus)
This snake species, the number 6 on our list of most common non-poisonous snake species in the world is common in southeastern Asia and Australia. It is also named common house snake, because it is often found in urban areas, in parks and households. Although non-venomous, these snakes are defensive and will not hesitate to attack, and they also possess large canines. Apart from tropical forests, it is a usual snake species wandering around cultivated and urban areas.