Great post! I wanted to back up Chris' post, there IS no evidence of fatty liver disease in Heterdon, a genus we know a whole heck of a lot more about than the tricolors! I know very little about the "other" hogs, but I am sure we can make some generalizations about them.
I am currently doing a major scientific literature search exclusively on hognoses. I have acquired around 50 papers and read half of them. I have found no published reports on negative aspects of an all rodent diet.
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...the oldest task in human history: to live on a piece of land without spoiling it."
Aldo Leopold (1938)
"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."
Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)