There is, if you look at the list of mice then you will see some mice win their races more often than other mice, its not a given stat that you should take by the heart because these are mice in the end and none of them will be like horses because they are going to eventually do silly stuff like not even going after the doors are open but it just gives you an idea of history at least.
Do not try to bet on according to it but if the top mice races the bottom 3 than I know who I am going to bet for, not that I am destined to win even in that situation but you at least have a higher chance of it, sometimes the best mice just decides not to even start and some smaller mice just goes right away without stopping while all others stop during the path and check out "something" I don't know what and that is how you may lose, its always a coin toss when it comes to mice.
still, luck is governing in this kind of game. same as other racing games. history might give you higher chance but will not secure your winnings
this mice racing website pretty attracted attention from the gambling community. maybe a fresh game for gamblers.
but where is the OP now? more than a week of being inactive. he should be more aggressive in promoting this site now that people are becoming curious with this game.
strike while the iron is hot! satisfy your potential players. otherwise, they will lose their interest.