Or starving... Dogs, cats and corpses is pretty mild compared to what happened to people during the "Great Leap Forward" or the "Potato Famine" (or any other famine or prolonged siege in history)...
There weren't other "Tarrares" around "surviving."
One illness increase metabolism and appetite, the other diseases decrease absorption across the board.
I think it's a fair assertion given the behavior and the medical nuances that he likely felt a pretty powerful hunger.