General Standards

Head
Should be evenly proportioned, with clean lines and a well-defined stop at the brow. The muzzle should be of good breadth, rounded and blunt, not narrow or pointed. The male head should project broadness and strength, while a female's projects strength and definition that is clearly feminine.
Faults: Long face with pointed muzzle, head too narrow or too wide, no clear brow stop, male head appearing too feminine, female head having a masculine appearance.

Ears
Standard
Well-formed oval shape of medium size, they should be upright and spaced well apart.
Faults: Creases or folds, ears set too low or too far apart.

Dumbo
Ears to be large, round, and semicircular, set low on the sides of the head, and pointing back toward the body, maintaining a picture of balance, while ideally being placed as low as possible on the head.
Faults: Creases or folds; pointing down, so as to give an oblong or tubular shape, pointed edges, set too high or too low.

Tail
Standard
Long and cylindrical, thick at the base and tapering to a fine point. Should be at least the length of the body ( nose to base of tail ) and be firm, and of size/thickness appropriate to the size of the rat, so as to give a balance appearance.
Faults: Not cylindical, short, thin. Disqualification: Kinked or docked.

Eyes
Large, round, and bold; set wide apart so as to give the appearance of width to the head. Placement is ideally half way between the tip of the nose and the back of the ears.
Faults: Eyes too small.

Teeth
Two upper and two lower incisors, none misshapen or missing. Mouth should be able to close normally, with top incisors in front of the lower.

General Faults
Stained, unkempt coats
Noticeably overweight or underweight
Overgrown nails or teeth
Kinked tail
Tattered ears
Injured toes
Other healed injuries that detract from the overall appearance

General Disqualifications
Severe scabs and/or parasites
Fleas, lice and mites
Pregnant or nursing does
Difficult to handle or aggression
Missing body parts including males with one or both testicles missing
Recent injuries that have not yet healed