The industry itself has admitted to killing up to 17,000 healthy dogs each year — 7,000 pups and young dogs never even make it to the track, and thousands of dogs 'retired' from racing will die — simply because they are too slow to win. 5 dogs are killed each week on the track alone. Not just greyhounds are killed though. Rabbits, cats, piglets and possums are all killed by being mauled to death. They are used as bait to make the dogs run around the track.