Chihuahua
Chihuahua genetic profile from the CanVAS Atlas. 25 dogs in the Atlas, heterozygosity 0.40. Nearest relatives, trait loci frequencies, cohort distribution.
In the atlas, the Chihuahua clusters consistently as Chihuahua (100% of the 25 dogs here). Genetic diversity is high (mean heterozygosity 0.3979), reflecting either a mixed-breed cluster or breeds with broad genetic backgrounds. At the trait loci, SMAD2 runs lower than average (6% here vs 74%); FGF4_retrogene_CFA18 runs lower than average (16% here vs 77%).
Ranks 107 of 107 on the bottleneck severity scale, among the most genetically diverse breeds in the atlas. Mean heterozygosity is 0.398, notably high, indicates broad genetic background. Low breed predictability score (0.23), individual dogs of this breed vary widely in genetics, suggesting active substructure or sub-population diversity. Only 25 dogs of this breed in the atlas, modestly sampled.
Closest genetic neighbors in the atlas: Pomeranian, Papillon, Maltese, Keeshond, and Portuguese Water Dog.
Median lifespan is 9.86 years, about 4.3 years shorter than a typical dog of 2.0 kg, one of the larger gaps in the atlas.
What the genome says about Chihuahua
Computed from the 14,478 research dogs in the Atlas. Methods: technical methodology.
- Pomeranian2.44
- Papillon3.09
- Maltese3.39
- Keeshond4.30
- Portuguese Water Dog5.50
Frequency of the alternate allele in this breed at each locus's representative SNP. Methods + caveats in technical methodology.
| IGF1 | 94% |
| HMGA2 | 2% |
| SMAD2 | 6% |
| LCORL | 92% |
| STC2 | 94% |
| ADAMTS17 | 78% |
| FGF4·CFA18 | 16% |
| FGF4·CFA12 | 80% |
| RSPO2 | 55% |
| FGF5 | 64% |
| KRT71 | 88% |
| MC1R | 92% |
| MSRB3 | 39% |
| BMP3 | 78% |
| SMOC2 | 88% |