The Greyhound is a breed of dog that has been primarily bred for coursing game and racing. A combination of long, powerful legs, deep chest and aerodynamic build allows it to reach speeds of up to 72 km/h (45 mph) in less than one and a half seconds, or within 3 strides. It is known that in England during the medieval period, Lords and Royalty keen to own greyhounds for sport, requested they be bred to colour variants that made them easier to view and identify in pursuit of their quarry.

The lighter colours, patch-like markings and white appeared in the breed that was once ordinarily grey in colour. The greyhound is the only dog mentioned by name in the Bible. (wikipedia)