Coat Length, Curl and Furnishings/Improper Coat


In dogs, variants in 3 genes govern coat length, curl and furnishings/Improper Coat (eyebrow and moustache growth). VGL now offers a test for these genes – FGF5, KRT71 and RSPO2. Tests can be ordered individually or in combination for a discounted fee.

Allow 2-6 business days for results.

Coat Length results reported as:

Test Result Coat Length (FGF5)
S/S Dog has short hair. Long-haired offspring cannot be produced.
S/L Dog has short hair and carries long hair gene.
L/L Dog has long hair.

Curl results reported as:

Test Result Curl (KRT71)
N/N Dog has straight coat.
N/C Dog has wavy coat
C/C Dog has curly coat.


Furnishings and Improper Coat:

Furnishings: The longer mustache and eyebrows seen in wire-haired dogs and other breeds. A dominant variant of the RSPO2 gene produces this desired texture and growth pattern of fur.

Improper Coat: The breed standard for Labradoodle, Goldendoodles and Portuguese Water Dog requires “furnishings”. In these dog breeds, lack of the dominant RSPO2 variant causes Improper Coat which is characterized by short hair on the head, face and legs.

*Furnishings and Improper Coat are the same test with different interpretations.

Furnishings results reported as:

Test Result Furnishings (RSPO2)
N/N Dog does not have furnishings.
N/F Dog has furnishings and carries 1 copy of the non-furnishing gene.
F/F Dog has furnishings. All offspring will have furnishings.

Improper Coat results reported as:

Test Result Improper Coat (RSPO2)
N/N No copies of Improper Coat, normal, dog will have longer hair on the muzzle and eyebrows.
N/IC 1 copy of Improper Coat, carrier, dog will have longer hair on the muzzle and eyebrows.
IC/IC 2 copies of Improper Coat, dog has Improper Coat, dog will NOT have longer hair on the muzzle and eyebrows.

Cadieu E, Neff MW, Quignon P, Walsh K, Chase K, Parker HG, Vonholdt BM, Rhue A, Boyko A, Byers A, Wong A, Mosher DS, Elkahloun AG, Spady TC, André C, Lark KG, Cargill M, Bustamante CD, Wayne RK, Ostrander EA. Coat variation in the domestic dog is governed by variants in three genes. Science 326:150-153, 2009.

Veterinary Genetics Laboratory, Tel 530-752-2211, Email VGL