-snip-
I’m not aware on this masterpiece gambling idea. Using an animal with an abnormal movement for a race make the race pure random. But this kind of game is not sustainable because there’s no define duration on each round since the mice can stay on same place or do back and forth without reaching the goal like the review I recently watch by reading your post.
This thread hasn't been seen for a few years and now it's back on the gambling section start page and it looks like they are no longer in operation.
In fact the idea of betting on rat races was not such a great idea and only attracted gamblers when they initially promoted it because there must have been a saturation of gamblers betting.
For bets that use animals today, which are still quite popular, are horse racing and cockfighting.
I'm not sure they can improve if they will be back in business.