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Body Size

STC2

chr4:40,039,868-40,050,497 · UU_Cfam_GSD_1.0

size locus chr4

Atlas-wide
Frequency
74%
dog-weighted average
Breeds with data
208
of 215
Dogs contributing
13,842
CanVAS Atlas
What the frequency means

STC2 chr4:40Mb. Known canine size locus. Direction: SMALL vs GIANT.

High frequency means

allele common in giant breeds

Low frequency means

allele common in small breeds

Top 10 breeds, highest frequency
  1. Fox Terrier Wire terrier
    100% n=12
  2. Greater Swiss Mountain Dog working
    100% n=16
  3. Italian Greyhound toy
    100% n=16
  4. Miniature Pinscher toy
    100% n=28
  5. Norwich Terrier terrier
    100% n=14
  6. Pug toy
    100% n=31
  7. Shanxi Xigou other
    100% n=12
  8. Shih Tzu toy
    100% n=38
  9. Soft Coated Wheaten Terrier terrier
    100% n=16
  10. Boxer working
    100% n=192
Bottom 10 breeds, lowest frequency
  1. Wire Fox Terrier terrier
    0% n=10
  2. Village Dog Cook Islands ancient_landrace
    0% n=10
  3. Retriever Breed Unknown mixed_unknown
    0% n=9
  4. Greenland Sledge Dog other
    0% n=12
  5. Doberman Pinscher working
    5% n=117
  6. Gray Wolf ancient_landrace
    12% n=13
  7. Leonberger working
    13% n=25
  8. English Bulldog non_sporting
    13% n=10
  9. Polish Lowland Sheepdog herding
    14% n=21
  10. Village Dog Slavic ancient_landrace
    16% n=16
Methodology

Frequency is measured at the typed-backbone 4:40056722 on chr4, 40.1 Mb (6 kb from the gene body). Alleles C/A. Coordinates from ensembl symbol UU Cfam GSD 1.0. Per-breed frequencies are computed across all CanVAS dogs labelled with that breed (missing genotypes excluded). See methodology for the full pipeline.

Last updated
Sources: CanVAS (Brundage 2026) · OMIA · Dog10K (Meadows 2023)