ScienceDaily (May 16, 2011) — Most snakes do not inject venom into their victims bodies using hollow fangs, contrary to common misconceptions. The fact is that most snakes and many other venomous reptiles have no hollow fangs. Physicists have now uncovered the tricks these animals use to force their venom under the skin of their victims.
http://www.sciencedaily.com/releases/2011/05/110516121728.htm