 Maxillary teeth smallest anteriorly, 12–15, followed after a gap by two large grooved fangs located just behind the posterior border of the eye.Although colubrid snakes are usually harmless to humans, "Philodryas" are opisthoglyphous (rear-fanged) snakes and can give a venomous bite.However, they have mild venom; so a bite is unlikely to cause lasting damage to humans.