http://www.justdogbreeds.com/fast-dog-breeds.html
This is a list of the fastest dog breeds. These dogs are extremely fast and agile on their feet.
Greyhound
German Pinscher
Ibizan Hound
Italian Greyhound
Pharaoh Hound
Whippet
Afghan Hound
Border Collie
Collie
German Shepherd Dog
Saluki
Airedale Terrier
Australian Cattle Dog
Australian Shepherd
Basenji
Bearded Collie
Beauceron
Belgian Malinois
Belgian Sheepdog
Belgian Tervuren
Borzoi
Canaan Dog
Dalmatian
Doberman Pinscher
Old English Sheepdog
Polish Lowland Sheepdog
Rhodesian Ridgeback
Scottish Deerhound
Siberian Husky
Smooth Fox Terrier
Vizsla
Weimaraner
Welsh Springer Spaniel
American Foxhound