I've heard that the easiest way of predicting greyhound racing is to ignore the form book and monitor the odds changes following bets being placed at the very last minute by those with insider information...
Here's a random greyhound racing tip which a man in a bar told me, so it must be true: before the race, leave it as long as possible to bet and watch the dogs. The one that is quivering and dancing and looks must wound up generally wins. Wait until you get a race where only one dog looks that way.