Toxicological trivia from December 11. 2009: In the suborder snakes, one of the systematic criteria used to define the families is based on the type and distribution of teeth, for example, teething Aglif, means that:
a) They have no teeth;
b) They have  teeth and grooves of the same size;
c) They have mixed teeth the same size, except the last one on each side of the jaw is a grooved fang.

Correct Answer b. Read more in Spanish monograph: Guide to prevention and treatment of venomous snakebites