Rat Terrier
Coat
Solid:

Tan:
with
in any of the patterns.
dogz may also have
markings.
Sable: Any sable combination is accepted in the clear, minimal or classic pattern.
with
tipping is also allowed.
Masking: All of the above may be masked (small or standard mask). The mask can be
and matches pigment type - black in black-based dogz, liver in livers, etc.
dogz can be masked with any of the mask colours.
Masks are not preferred in non-tan marked dogz.
White Markings: The rat terrier must always have some
somewhere on the body and may be solid
all over, but 20-90% white overall is preferred.
Ticking/Roaning: Ticking is allowed but the white must be clearly visible.
This breed is allowed to have unmatched ears (e.g. one up and one tipped over), but matching ears are strongly preferred.
Comes in standard and miniature varieties.
Eyes
in dogz with black pigment.
in dogz with liver or blue pigment.
in isabella dogz.
is accepted but faulted.
Nose
in black dogz.
in liver dogz.
in blue dogz.
in isabella dogz.
Solid cream/red (
) dogs may have

If masked, nose colour follows the mask.
For sables, nose colour depends on the tipping colour.
Dark brown sables (
) and brown-tipped sables may have 
Dogz tipped with black may also have 
Other sables may have
Faults
Mismatched nose and/or eye pigment.
Incorrect tipping/shading colour in a sable (such as black tipping on a liver dog).
Disqualifications
Solid colours other than white.
Albinism or brindle.
Notes
The Rat Terriers, or 'squirrel dogs' as they have also been called, are excellent hunters for most small game, but especially for squirrels. They work close to the hunter, often yipping which makes them ideal for rabbiting, flushing and for jumping game in brushy regions.
A good Rat Terrier is said to have the tenacity of the terrier, the nose of the Beagle and the speed and eyesight of an Italian Greyhound. They are known as a type, rather than a breed, and were created about 100 years ago in the US from a wide variety of foundation breeds such as the Fox Terrier and perhaps even Greyhound.
The overall appearance of the Rat Terrier should be a muscular, active small-to-medium hunting terrier, and should be judged with this in mind. It is preferred to be just slightly longer than tall, with a broad, wedge shaped head and well filled out muzzle. The ears are V-shaped and may be carried erect, tipped or button. The neck is long, clean and slightly arched. The body should have straight topline with a well filled chest. The tail can be naturally bobbed, long or docked.
Breed Files
Supernova
Filename: SN Rat TerrierOffset: 0008
Base: Chihuahua
SCP: Chihuahua
Accepted: October 20, 2008
Notes: Standard variety. Addballz ears (three shape variations), tail (three carriage variations and four length variations) and optional liplines.
Unknown
Filename: CA Rat TerrierOffset: AD35
Base: Chihuahua
SCP: Dalmatian
Accepted: May 10, 2006
Notes: Standard variety. Has ear and tail length/shape. Angled legs.
Unknown
Filename: Rat TerrierOffset: A999
Base: Dalmatian
SCP: Dalmatian
Accepted: January 3, 2006
Notes: Standard variety.
Nimh
Filename: Rat TerrierOffset: A999
Base: Dalmatian
SCP: Dalmatian
Accepted: July 14, 2004
Notes: Three ear variations, four tail variations and three size variations. Breed the different sizes together at your own risk. Arrow shows apparent lack of tan - this is due to posture and is NOT faulted. It is not a real lack of tan. Purple outline shows standard variety, red shows miniature. Green shows teddy roosevelt variety, which is not accepted as a rat terrier.