All are features of non poisonous snakes except
Features of non poisonous snakes Usually not triangular Large head scales with some exceptions Belly scales small or moderate and does not cover the entire breadth Small and sho teeth only Tail not flat and tapering Not nocturnal Scales distal to the anal plate is divided Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 509
Usually not traiangular
Fangs present
Belly scales are small and does not cover the entire breadth
Head scales are large
Poisoning