A client brings a Agouti into the clinic for reduce appetite…

A client brings a Agouti into the clinic for reduce appetite.  Immediately, you tell the veterinarian that you have no idea what type of animal that is. You’re informed that Agouti’s are hystricomorphic rodents from South America and they possess hypsodont teeth.  Based on your knowledge of other rodents, taxonomy, and natural history use your critical thinking skills to draw conclusions about this species:  What type of diet do you think this animal would have?  What could be an potential underlying cause of the inappetance that you should consider during your history and/or preliminary physical exam?  What “typical” species seen frequently as pets do you think they could be closely related to?