Whimps I've seen a different side of them to you FastDogz,many times I've witnessed greyhounds breaking a leg in a race and on a lot of occasions they will complete the race.
Same with injuries,if something live or artificial gets up infront of them it doesn't matter to them if they are injured or not they will still take off after it.
Have you ever been unfortunate enough to see two greyhounds fight or saw them after a fight,wimps they are not.I have unluckily been in that situation After I'd cleaned them up both dogs stood quietly as I stitched their cuts,not a hint of a TRAUMA.