We were almost going to this race last year but our dog got sick and we didn't go. I found 3 hotels near the track and none of them were pet friendly so it wasn't really an option anyways. I actually spoke to the track manager and he was very nice and recommended the better of those three, yet I can't remember which it was now or even what his name was, but I do know I got his phone number off their website.
http://www.immrace.com/contact.htm