There are several varieties of snakes, of which three species (all vipers) are poisonous.
The Elapinae have comparatively short fangs, while those of the vipers, especially the crotaline snakes, are much longer, sometimes nearly an inch in length.
As regards reptiles, there are at least seven poisonous snakes - two cobras, two puff-adders and three vipers.
Viperinae, vipers (q.v.) or adders.
In the same pamphlet he defends an appeal to the emotions, and advocates preaching terror when necessary, even to children, who in God's sight " are young vipers.