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[[Image:BlueTonguedLizard.jpg|300px|thumb|right|'''Blue-tongued Skink''' (Photo credit: Sean Mack, Wikimedia Commons)]]

[[Image:BlueTonguedLizard.jpg|300px|thumb|right|'''Blue-tongued Skink''' (Photo credit: Sean Mack, Wikimedia Commons)]]

==Mouth==

==Mouth==

The organs and divisions of the gastrointestinal tract are similar to those of mammals. The lizard has a simple, J-shaped, elongated stomach. A caecum is present in many species. The large intestine is thin-walled and less muscular than the stomach or small intestines.

The organs and divisions of the gastrointestinal tract are similar to those of mammals. The lizard has a simple, J-shaped, elongated stomach. A caecum is present in many species. The large intestine is thin-walled and less muscular than the stomach or small intestines.

[[Lizard Feeding|Herbivorous]] lizards such as the [[Green Iguana|green iguana]], [[Prehensile-tailed Skink|prehensile-tailed skink]], [[Spiny-tailed Lizard|egyptian spiny-tailed lizard]] and [[Chuckwalla|chuckwalla]] (''Sauromalus obesus'') have a sacculated colon to facilitate hindgut fermentation. These animals usually have higher [[Preferred optimum temperature zone|optimal body temperature zones]] in order to enhance microbial fermentation.

[[Lizard Feeding|Herbivorous]] lizards such as the [[Green Iguana|green iguana]], [[Prehensile-tailed Skink|prehensile-tailed skink]], [[Spiny-tailed Lizard|egyptian spiny-tailed lizard]] and [[Chuckwalla|chuckwalla]] (''Sauromalus obesus'') have a sacculated colon to facilitate hindgut fermentation. These animals usually have higher [[Preferred optimum temperature zone|optimal body temperature zones]] in order to enhance microbial fermentation.

==Cloaca==

==Cloaca==