2What is a Reptile?A cold-blooded vertebrate of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin, and typically laying soft-shelled eggs on land
3Testudines – Turtles and Tortoises Hard Shell (usually)Carapace and plastronOviparousInternal fertilizationOften times lacking teeth
5River CooterHieroglyphic River CooterPseudemys concinna
6Red Eared SliderRed Eared SliderTrachemys scripta
7Squamata – Snakes and Lizards Largest order of reptiles (more than species)Loosely hinged jawSkin is shedMay be limblessFound all over the world!
8SnakesSnakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external earsPaired organs are usually found one in front of the otherOne functional lung
9Snakes Smell the air with their forked tongue Lack chewing teeth and must swallow prey wholeMay or may not be venomousHow can we tell?!
10Snakes and Venom (INDIANA) 4 nostrils (2 are pits)“Fat” broad bodiedBroad “spade shaped” heads (triangle)Slited pupils2 nostrilsHead is about the same width as the bodyRound pupilsVenomousNon-Venomous
14LizardsLizards typically have feet and external ears, while snakes lack both of these characteristics. However, because they are defined negatively as excluding snakes, lizards have no unique distinguishing characteristic as a group.
15Lizards Can have well developed color vision Use a combination of body colorations, body positions and pheromones to communicate.