Changes

Six rows of teeth are generally present in snakes commonly seen in the pet trade, one row on each side of the lower jaws and two rows on each side of the upper jaws.   

Six rows of teeth are generally present in snakes commonly seen in the pet trade, one row on each side of the lower jaws and two rows on each side of the upper jaws.   

==Morphology==

==Morphology==

Teeth are of the pleurodont type and are generally not differentiated ([[Aglyphous|aglyphous]]) except for fangs in venomous snakes or in species with specialised feeding habits (none have molars, incisors, etc).  

Teeth are of the [[Pleurodont|pleurodont]] type and are generally not differentiated ([[Aglyphous|aglyphous]]) except for fangs in venomous snakes or in species with specialised feeding habits (none have molars, incisors, etc).

 

==Fangs==

==Fangs==

Fangs may be located at the front or the rear of the mouth.  Front fangs are either fixed (prosthoglyphous) or moveable ([[Solenoglyphous|solenoglyphous]]). They are attached to the maxilla and may be shed monthly. Reserve fangs are present behind each functional fang and these grow in size, move forward and ankylose with the maxilla.  Rear fangs may be one or two pairs of enlarged teeth positioned caudally in the mouth (opisthoglyphous) or the unusual arrangement seen in xenodontine dentition.  When not in use, a membranous flap usually covers the fangs.   

Fangs may be located at the front or the rear of the mouth.  Front fangs are either fixed (prosthoglyphous) or moveable ([[Solenoglyphous|solenoglyphous]]). They are attached to the maxilla and may be shed monthly. Reserve fangs are present behind each functional fang and these grow in size, move forward and ankylose with the maxilla.  Rear fangs may be one or two pairs of enlarged teeth positioned caudally in the mouth (opisthoglyphous) or the unusual arrangement seen in xenodontine dentition.  When not in use, a membranous flap usually covers the fangs.