Non-poisonous snakes leave a trail of teeth, while house snakes me rely scratch. When they are about to shed their fangs they don't strike hard.
Snakes only strike under real provocation.
A hiss by a Viper is a warning sign that you are interfering with its territory, while a Cobra raises a hood to send the same signal. Only after these warnings does a snake strike. This means that you could stand within a few inches from a snake in its natural environment and, as long as it does not feel threatened, it will not attack you. This behaviour is common among non-poisonous snakes, many of which flaunt the same characteristics as deadly poisonous snakes. In its efforts of preservation, the NMK has in its custody the Gaboon Viper, one of the largest and rarest species of Vipers, a group which is front-fanged and poisonous.