Describes the inheritance of black and red pigment with an emphasis on the Border Collie.

Describes inheritance of the Brown (B) and Extension (E) genes in this breed, with interactive illustrated mating chart.

Brief overview of color inheritance in this breed, covering Agouti (A) and Piebald (S) series genes, by the late Roy Robinson.

Article about color inheritance, with a focus on Brindle, in the Great Dane.

Article about the inheritance of the Brown (B) and Extension (E) genes in this breed, illustrated with Punnett squares.

Detailed article about Sable coloration and the Agouti (A) and Albino (C) series alleles in the German Shepherd.

Article specifically about the effects of the Agouti (A) gene in this breed.

Summarises the color inheritance of this breed, with detail on the Agouti (A) series and linked photos.

Describes coat color inheritance in this breed, with close up photos showing the different colors. Also some detailed information about Brindle and the Extension (E) gene.

Scientific paper concerning Sable coloration and the Agouti (A) series, illustrated with photos.