Chihuahua
Coat
Solid:

PFM dogz may have a
chest patch and
eyebrows without fault.
Merle: Blue, red, sable, slate, isabella or brindle merle (strict).
Merle is faulted in this breed.
Tan:
or merle (not sable merle) with clear or brindled
in the traditional or creeping pattern.
Sable: Any of the sable combinations in any of the patterns.
Brindle: One of the following combinations:
with
brindling.
with
striping.
Masking: All colours above may be masked (small or standard mask). The mask may be

The mask matches the pigment of the rest of the dog - e.g. a black pigmented dog has a black mask, a liver pigmented dog has a liver mask.
Cream/red dogz can be masked with any of the colours.
Urajiro: Allowed on all of the above.
White Markings: All of the above may come with or without
in any amount.
In addition PF Magic dogz may have any combination (one, some or all) of the following white areas without fault; top of snout, front of chest, front feet, hind feet (including ankles).
Comes in longhair and shorthair varieties.
Eyes
in black pigmented dogz.
in liver or blue pigmented dogz.
in isabella pigmented dogz.
Creams may have
if they also have liver, blue, or flesh noses..
is accepted in all colours and files, faulted in non-PF Magic, less preferred in PFM.
Nose

Blue dogz have 
Liver dogz have 
Isabella dogz have

Cream dogz may also have

When the dog is masked, the nose pigment follows the mask.
Faults
Wrong nose colour.
Wrong eye colour.
Cream dogz that have either brown eyes and liver or blue nose, or amber eyes and black nose - their pigment should match.
Teal eyes in a non-PF Magic file.
Merle.
Disqualifications
None
Notes
Tiny dogs were kept by the Mayas of Mexico over 600 years ago, as well as by the Toltecs during the 1100's. These dogs were known as 'Techichu', and were kept as companions, as food and were also sacrificed to gods. When they died, the dogs were buried together with their owners.
It is believed that the modern Chihuahua has been partially mixed up with European, and possibly Chinese toy dogs that came with Columbus and other explorers. It is a Mexican breed, but the modern Chihuahua was bred and formed in the USA.
Despite its small size, the Chihuahua should appear healthy and well built. The head is round with marked stop and rounded forehead. The muzzle should be short and straight. The eyes are large and expressive. The ears are large, set low and standing out from the head. The body is compact, slightly rectangular, plane and horizontal with deep chest and slight tuck up. The tail is set high and characteristically broader at the middle than by the base.
Breed Files
Grand Theft
Filename: Chihuahua GTOffset: DA22
Base: Chihuahua
SCP: Labrador
Accepted: August 4, 2010
Notes: Three coat heavinesses (1 Shorthair, 2 Longhair) as overwriting files. Two ear and three tail variations within each coat variation (made of addballs). Optional liplines. 2nd gen Longhairs sometimes lose fuzz completely on the back of the neck and foreleg feathering - this is not A-registerable.
Fango
Filename: ChihuahuaOffset: F303
Base: Chihuahua
SCP: Chihuahua
Accepted: April 27, 2009
Notes: Longhaired version of the PF Magic file, using addball feathering.
Abnormality
Filename: Abno ChihuahuaOffset: DDA3
Base: Dalmatian
SCP: Scottie
Accepted: June 11, 2006
Notes: Shorthair variety. May be unsuitable for obedience. 2nd gens may lack fuzz on the tail.
Paranoia
Filename: ChihuahuaPOffset: BB55
Base: Chihuahua
SCP: Chihuahua
Accepted: April 3, 2006
Notes: Includes shorthair and longhair varieties. Also includes variations in leg and muzzle length and noseshines (1 or 2 shines, size 1 or 4 pixels).
Salem
Filename: ChihuahuaOffset: F303
Base: Chihuahua
SCP: Chihuahua
Accepted: January 4, 2006
Notes: Longhaired variety. Several files for different colours. The tan markings in some variations are incorrect - check before registering.
Cierra
Filename: ChihuahuaOffset: F303
Base: Chihuahua
SCP: Chihuahua
Accepted: July 14, 2004
Notes: Shorthair variety. Slightly angled legs, fine for obedience though.
Supernova
Filename: ChihuahuaOffset: F303
Base: Chihuahua
SCP: Chihuahua
Accepted: June 24, 2004
Notes: Both coat types, different leg, muzzle, gender and size variations. 40 colour variations. Angled legs, tail is part addball, moves partially. No 2nd generation problems, but breed longhairs with shorthairs on your own risk.
Unknown
Filename: ChihuahuaSMOffset: AB88
Base: Chihuahua
SCP: Chihuahua
Accepted: June 22, 2004
Notes: Shorthaired variety. Angled legs and addball ears. 2 gens, have linez on the ears that dont connect, makes them look slightly different then 1 generation dogz.
PF Magic
Filename: ChihuahuaOffset: F303
Base: Chihuahua
SCP: Chihuahua
Accepted: September 1, 1998
Notes: Shorthair variety. The original unhexed PFMagic file, as released for Petz II. 2nd gens have less fuzz on the legs.