The rules state that an American Kennel Club Greyhound cannot race and a National Greyhound Association Greyhound cannot show. There are subtle differences between the two. The obvious difference is that the NGA Greyhound is much more muscular. Below you will see a list of characteristics and how each one may be judged and points given.
This information was copied from the AKC website.

www.akc.org

Greyhound

Hound Group
Breed Standard

greyhdHead

Long and narrow, fairly wide between the ears, scarcely perceptible stop, little or no development of nasal sinuses, good length of muzzle, which should be powerful without coarseness. Teeth very strong and even in front.

Ears

Small and fine in texture, thrown back and folded, except when excited, when they are semi-pricked.

Eyes

Dark, bright, intelligent, indicating spirit.

Neck

Long, muscular, without throatiness, slightly arched, and widening gradually into the shoulder.

Shoulders

Placed as obliquely as possible, muscular without being loaded.

Forelegs

Perfectly straight, set well into the shoulders, neither turned in nor out, pasterns strong.

Chest

Deep, and as wide as consistent with speed, fairly well-sprung ribs.

Back

Muscular and broad.

Loins

Good depth of muscle, well arched, well cut up in the flanks.

Hindquarters

Long, very muscular and powerful, wide and well let down, well-bent stifles. Hocks well bent and rather close to ground, wide but straight fore and aft.

Feet

Hard and close, rather more hare than catfeet, well knuckled up with good strong claws.

Tail

Long, fine and tapering with a slight upward curve.

Coat

Short, smooth and firm in texture.

Color

Immaterial.

Weight

Dogs, 65 to 70 pounds; bitches 60 to 65 pounds.

SCALE OF POINTS

  • General Symmetry and quality 10
  • Head and neck 20
  • Chest and shoulders 20
  • Back 10
  • Quarters 20
  • Legs and feet 20
    TOTAL 100