The Whippet is a breed of dog in the sighthound family. They are active and playful and are physically similar to a small Greyhound. Whippets are a medium-size dog averaging in weight from 15 to 30 lb (6.8–14 kg), with height (under the FCI standard) of 18.5 - 20 inches (47 - 51 cm) for males and 17.5–18.5 inches (44–47 cm) for females. Whippets regularly compete in dog shows, lure coursing and racing. They are among the fastest of dogs running a course at 36 mph (58 km/h) and can run 200 yards in under 12 seconds. Whippets are generally quiet and gentle dogs, and may be content to spend much of the day resting. They are loyal and friendly.