I've got Greyhound Manager 2, it was free once and I downloaded it to see what it was like. It does certainly involve a lot of stats. Also it's got dogs in it. Other than that, I can't really tell you much - having never played a game like this I have no idea where to start, and it looks like it would be a steep learning curve.
I do get the impression that it would be a good game if I was at all interested in greyhound racing, or manager/stats games - it looks like it has a lot of detail and looks like a lot of thought has gone in to it.
You will probably need (or at least want) a stylus though, some of the buttons are tiny.