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WordNet
greyhound racing

n. the sport of racing greyhounds

Wikipedia
Greyhound racing

Greyhound racing is an organized, competitive sport in which greyhound dogs are raced around a track. There are two forms of greyhound racing, track racing (normally around an oval track) and coursing. Track racing uses an artificial lure (now based on a windsock) that travels ahead of the dogs on a rail until the greyhounds cross the finish line. As with horse racing, greyhound races often allow the public to bet on the outcome. In coursing the dogs chase a lure (originally a live hare or rabbit that could be killed by the dog).

In many countries greyhound racing is purely amateur and solely for enjoyment. In other countries, particularly Australia, Ireland, Macau, Mexico, Spain, the UK and the US, greyhound racing is part of the gambling industry and similar to horse racing - although far less profitable. Animal rights groups are critical of the welfare of dogs in the commercial racing industry where, in some countries, dog trainers illegally use live baiting. A greyhound adoption movement has arisen to assist retired racing dogs in finding homes as pets, with an estimated adoption rate of over 90% in the USA.