No, Hungry Horse is the name of a place in Montana.
Google it, and you'll get links to their tourist board. America is full of places with names like Hungry Horse - it's not that strange really, given how important horses are to their cultural history. Ever wondered why "Grand Theft Auto" is such a serious crime in the US? It's because of the days when if you stole a guy's horse, you might as well have handed him a death sentence, if you left him stuck in the middle of nowhere
Thanks for all this interesting information! As I didn´t understand it before, I was thinking about the importance about horses in TP to make any kind of connection (Sarah Palmer´s visions, Windom in disguise, the word "horse" as a metaphor of drugs...) Now, it´s all clear to me!