The Afghan Hound evolved for a purpose.  His structure not only reflects that purpose but also sets him apart from other sighthounds.  He was required to be mentally independent, think on his own and act without human command.  In his native lands of Afghanistan, Pakistan and India he, either singly or in packs, was the guardian of the native tribes, their villages and flocks.  He killed their game, he protected, and sometimes herded, their sheep and goats.

He had to be structurally sound to survive in rugged, inhospitable areas  with craggy extremes of terrain and massive temperature changes.  Endurance and agility were absolute necessities for him.  He didn't need the flat-out speed of the greyhound, instead requiring power and agility.  Therefore he is square bodied, short loined, and has a broad, strong level topline, with a well set rear.  Large thick feet were necessary for directional changes, speed and gripping  power.  His gaits reflect his purpose: the energy conserving reconnaissance trot used for hunting, patrolling and searching (probably slower than the gait you  see in today's show ring), and the flat-out, ground covering, double suspension gallop so characteristic of all sighthounds. 

His coat developed as an answer to the hostile conditions under which he lived.  Long side and leg coat to protect from the bitter cold,  short haired saddle and neck hair to help dissipate the heat in the searing summer months.

He developed as a rugged individualist, an athlete, and an independent thinker.  He should be hard, agile, fit and trim.  He looks at you and through you.  He imparts a feeling of collected power, ready and able to spring.  This is how he began and this is how he should be today.