Changes

*[[Snake Special Senses|Heat sensory pits]] (infrared-sensitive receptors) - are deep grooves between the nares and the [[Snake Eye|eye]] of [[Pit viper|pit vipers]], [[Pythoninae|pythons]] and some [[Boidae|boas]] which allow them to 'see' the radiated heat of their prey.  These pits can also be found on the upper lip, just below the nares, termed 'labial pits'.

*[[Snake Special Senses|Heat sensory pits]] (infrared-sensitive receptors) - are deep grooves between the nares and the [[Snake Eye|eye]] of [[Pit viper|pit vipers]], [[Pythoninae|pythons]] and some [[Boidae|boas]] which allow them to 'see' the radiated heat of their prey.  These pits can also be found on the upper lip, just below the nares, termed 'labial pits'.

*Rattle - present in some snakes and used to warn predators.  It is enlarged with each [[Snake Shedding|shed]].

*Rattle - present in some snakes and used to warn predators.  It is enlarged with each [[Snake Shedding|shed]].

*Gastropeges - are a single row of large ventral scales in snakes that aid [[Snake Locomotion|locomotion]].

*Gastrosteges - are a single row of large ventral scales in snakes that aid [[Snake Locomotion|locomotion]].

 

==References==

==References==

Mader, D.R. (2005). Reptile Medicine and Surgery. Saunders. pp. 51 ISBN 072169327X  

Mader, D.R. (2005). Reptile Medicine and Surgery. Saunders. pp. 51 ISBN 072169327X  

[[Category:Snake_Anatomy]]

[[Category:Snake_Anatomy]]