Quote Originally Posted by frankykeno
Constrictor dentition: Most snakes have two rows of teeth on each upper jaw and one row on each lower jaw. All of the teeth are short and hook-like. All non-poisonous snakes have constrictor dentition, regardless of whether or not they actually constrict their prey.

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I was under the impression that BP's actually have more than two rows of teeth on their upper jaw though (more research to come).
Just my interpretation, but I believe this says that in total, most snakes have 4 rows on the roof of the mouth, and 2 rows on the compined bottom jaw. This is the impression I get when I see my bp realign her jaw post meal.