Built for racing, Greyhounds are the fastest dogs and can reach speeds over 45 miles per hour at full gallop.
Sighthounds like Salukis are agile runners originally bred to hunt by speed and sight over long distances.
The elegant, independent Afghan Hound can run up to 40 mph thanks to its athletic slender build and long legs.
Energetic hunting dogs like Vizslas can sustain speeds around 40 mph when running at full tilt.
Don't let their short legs fool you - Jack Russell Terriers can clock speeds over 35 mph while chasing prey.
Dalmatians have great stamina and can run long distances at 37 mph, making them excellent jogging companions.
Whippets are true athletes, running up to 34 mph when racing thanks to their lean muscles and deep chests.