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Coendou prehensilis
Amazonia Exhibit, Mesker Park Zoo and Botanical Gardens, Evansville, IN, USA
As of 4/2/2012: My thanks go out again to the Project Noah community for their assistance (in this case, AnnaWhipkey and MAURO have my utmost thanks). I have updated this spotting to include the proper common and scientific names as well as references.
this site lists Coendou prehensilis at the Mesker zoo http://globalspecies.org/zooinsts/displa...
@AnnaWhipkey
Yes, it's definitely a porcupine, and given that it is displayed in the Amazonia exhibit I would venture a guess that it is a New World species (Erethizontidae); however, until I can verify the exact species I will leave it as an unidentified spotting.