Conflating definitions is detrimental to fostering an understanding of the entire issue.

Reptiles don't have to be 'exotic' (non-native) animals to be considered exotic pets (non-traditional and/or wild, as opposed to domesticated) by many.

http://en.wikipedia.org/wiki/Exotic_animal

http://en.wikipedia.org/wiki/Exotic_pet

http://exoticpets.about.com/cs/resourcesgeneral/f/exoticdefinitio.htm

So, while a reptile may be either a native OR exotic animal, most people would consider ANY reptile to be an exotic pet.