You are using an outdated browser. They are similar in that both bets require the punter to select the top 2 dogs in a race, in either order. The only money you spend at BetAmerica is the money you risk in your own wagers at true track odds. In a superfecta key, you pick one dog to take 1 st and then three or more dogs to take 2 gambbling3 rd and 4 th in no particular order. Fillies and mares three years old andGreyhound racing involves a race between eight greyhounds over a range of distances from to To place wagers use one of the betting services. BetAmerica is the leading online betting website for greyhound racing in the United States. No other website offers more betting on greyhound racing, including. Greyhound racing satisfies a niche part of the racing world. Even though horse racing earns the lion's share of the glory and attention, there's something.