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American Cocker Spaniel

American Cocker Spaniel genetic profile from the CanVAS Atlas. 67 dogs in the Atlas, heterozygosity 0.29. Nearest relatives, trait loci frequencies, cohort distribution.

What the atlas says about American Cocker Spaniel

In the atlas, the American Cocker Spaniel clusters consistently as American Cocker Spaniel (100% of the 67 dogs here). At the trait loci, FGF4_retrogene_CFA12 runs lower than average (2% here vs 80%); SMAD2 runs lower than average (30% here vs 74%).

Closest genetic neighbors in the atlas: English Springer Spaniel, Cavalier King Charles Spaniel, English Setter, Gordon Setter, and Wirehaired Pointing Griffon.

Genetic dimensions · CanVAS atlas

What the genome says about American Cocker Spaniel

Computed from the 14,478 research dogs in the Atlas. Methods: technical methodology.

Dogs in the Atlas
67Founders
56 from Hayward2016, 10 from Spatola, 1 from JenkinsWGS
Genetic diversity
0.29Moderate
Mean heterozygosity across the breed. Ranks 33rd most genetically tight of 107 ranked breeds.
Cluster structure
Splits into two genetic sub-populations
Intra-breed RMS distance: 21.37 · likely working/show-line, regional, or kennel lineage split.
Nearest genetic relatives
  1. English Springer Spaniel5.70
  2. Cavalier King Charles Spaniel5.87
  3. English Setter5.94
  4. Gordon Setter6.02
  5. Wirehaired Pointing Griffon6.48
Top-10 PC corrected Euclidean. Lower = closer.
Trait genetics
Allele frequencies at named morphology loci

Frequency of the alternate allele in this breed at each locus's representative SNP. Methods + caveats in technical methodology.

Body size
IGF199%
HMGA299%
SMAD230%
LCORL100%
STC297%
ADAMTS1780%
Leg length
FGF4·CFA1872%
FGF4·CFA122%
Coat
RSPO277%
FGF589%
KRT7193%
MC1R37%
Ear set
MSRB368%
Skull shape
BMP357%
SMOC299%
Add your American Cocker Spaniel to the Atlas

You can add your American Cocker Spaniel right now at /add/ as a Charted star. Or, if you'd rather wait for DNA uploads, leave your email and we'll let you know the moment those open.

Last updated
Sources: CanVAS (Brundage 2026) · CanVAS dimensions data