This article is from the Afghan Hound Breed FAQ, by Janis Nixon with numerous contributions by others.
Afghans come from the hound group, or to be more exact are from the
sighthound family, of which all extremely fast, greyhound-like
coursing dogs are a part. The Afghan dog stands from 26 to 28 inches
at the withers, while the bitch stands 24 to 26 inches tall. Males
weigh approximately 60 pounds and females weigh about 50 pounds. The
most arresting feature of the elegant Afghan is his coat, which is
long and silky everywhere on the dog, except on the face and back,
where it is short and glossy. The Afghan excells as a broken field
runner, and the breed's agility, endurance, tenacity and cunning are
legendary. Afghans can double-suspension gallop at speeds of at least
35 to 40 mph and turn on a dime, can take a broad jump of 20 feet and
can leap 7 feet straight up from a standing position.