<prompt> If the 3rd supralabial scales are large and touching the eye and nasal shield, the snake may beKraitPit viperSaw scaled viperCobra  <response>: If the head scales are large, it may be poisonous or non poisonous. Look for the 3rd supra labial and if it is touching the eye and the nasal shield, it is poisonous cobra or coral snake Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 511 