Some handlers like to use slower dogs when chasing rabbits so that the dog brings the rabbit back to them. Rabbits tend to loop around in a circle when being chased; if the dog can't catch the rabbit, the hunter can then shoot the rabbit, which makes the rabbit a lot more usable for human consumption. A Greyhound, however, is fast and agile and may catch the rabbit long before it loops back to a hunter to be harvested. If you are using a Greyhound to hunt rabbit then the rabbit may be more likely to be dog food than people food! Keep that in mind.