Guinea Pig (Cavia porcellus)
I believe this one is named Larry, but it might also be Curly or Moreen (the Zoo only had a photo of Larry displayed, and it wasn't detailed enough to tell for sure if it was the same guy without knowing what the other two look like).

The guinea pig, also called the cavy, is a species of rodent belonging to the family Caviidae and the genus ''Cavia''. They originated in the Andes, and earlier studies based on biochemistry and hybridization suggested they are domesticated descendants of a closely related species of cavy.
Similar species: Rodents

By Joe Spandrusyszyn
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Uploaded Dec 8, 2015. Captured in 1 Conservation Pl, Syracuse, NY 13204, USA.