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Rat Terrier

Rat Terrier genetic profile from the CanVAS Atlas. 9 dogs in the Atlas, heterozygosity 0.38. Nearest relatives, trait loci frequencies, cohort distribution.

What the atlas says about Rat Terrier

In the atlas, the Rat Terrier clusters consistently as Rat Terrier (100% of the 9 dogs here). Genetic diversity is high (mean heterozygosity 0.3807), reflecting either a mixed-breed cluster or breeds with broad genetic backgrounds. At the trait loci, SMAD2 runs lower than average (11% here vs 74%); IGF1 runs higher than the atlas average (100% here vs 55%).

Mean heterozygosity is 0.381, notably high, indicates broad genetic background. Only 9 dogs of this breed in the atlas, every individual contributes outsized weight to the breed's computed profile.

Closest genetic neighbors in the atlas: village dog Costa Rica, Papillon, village dog Fiji Kadavu, village dog Fiji Viti Levu, and village dog Colombia.

Genetic dimensions · CanVAS atlas

What the genome says about Rat Terrier

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

Dogs in the Atlas
9Founders
7 from Hayward2016, 2 from Spatola
Genetic diversity
0.38Diverse
Mean heterozygosity across the breed. Too few dogs in this breed (<20) to rank.
Cluster structure
Single tight cluster
Intra-breed RMS distance: 20.64
Nearest genetic relatives
  1. Village Dog Costa Rica4.74
  2. Papillon4.97
  3. Village Dog Fiji Kadavu5.28
  4. Village Dog Fiji Viti Levu5.38
  5. Village Dog Colombia5.82
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
IGF1100%
HMGA222%
SMAD211%
LCORL72%
STC279%
ADAMTS1744%
Leg length
FGF4·CFA1894%
FGF4·CFA1289%
Coat
RSPO238%
FGF556%
KRT7194%
MC1R72%
Ear set
MSRB364%
Skull shape
BMP386%
SMOC278%
Add your Rat Terrier to the Atlas

You can add your Rat Terrier 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