grey hound

The English Greyhound, or simply the Greyhound, is a breed of dog, a sighthound which has been bred for coursing, greyhound racing and hunting. Since the rise in large-scale adoption of retired racing Greyhounds, the breed has seen a resurgence in popularity as a family pet.
Greyhounds are defined as a tall, muscular, smooth-coated, "S-shaped" type of sighthound with a long tail and tough feet. Greyhounds are a separate breed from other related sighthounds, such as the Italian greyhound.
The Greyhound's combination of long, powerful legs, deep chest, flexible spine, and slim build allows it to reach average race speeds exceeding 64 kilometres per hour (40 mph). A racing greyhound can reach a full speed of at least 21.3 m/s (77 km/h) 47 mph.

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