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Sphynx

origin: Canada · 7 figures in the corpus · Q42712

Every figure below carries this breed's name or id in its source study -- grouped by what it measures, not ranked. A breed appearing under a study here does not mean every other breed was tested and came back negative; it means this is what has a named source so far. See each figure's own page for its caveats.

Longevity

6.68 years (life expectancy at age 0) verified

Sphynx: years (life expectancy at age 0) (Teng KT, O'Neill DG, Brodbelt DC, Church DB, Pegram C)

  • Study sample n=18 (small sample; treat the estimate as imprecise).

Breeding

4.57 mean kittens per litter verified

Sphynx: mean litter size (Cerna et al. 2024)

  • Study sample n=14 litters.
  • Small breed sample; treat as imprecise.
14.3 percent of litters by caesarean section verified

Sphynx: caesarean-section rate (Cerna et al. 2024)

  • Study sample n=14 litters.
  • Small breed sample; treat as imprecise.
21.9 percent cumulative kitten mortality to 12 weeks verified

Sphynx: cumulative kitten mortality to 12 weeks, stillbirths included (Cerna et al. 2024)

  • Study sample n=14 litters.
  • Small breed sample; treat as imprecise.

Category (FIFe)

4 FIFe category (1-4, coat/morphology grouping) verified

Don Sphynx (DSP): FIFe Category 4

  • Category is a coat/morphology grouping FIFe itself uses, not a ranking (1=lowest number, 4=highest, no ordinal meaning).
  • FIFe breed label 'Don Sphynx' (DSP) does not have a confident 1:1 match in data/breeds.json.
4 FIFe category (1-4, coat/morphology grouping) verified

Sphynx (SPH): FIFe Category 4

  • Category is a coat/morphology grouping FIFe itself uses, not a ranking (1=lowest number, 4=highest, no ordinal meaning).

Other

1966 year (Wikidata inception, P571) preliminary

Sphynx: year of inception recorded on Wikidata

  • Only 3 of 143 queried breed items carry a Wikidata P571 statement at all -- this is a very sparse field, shown for the few breeds that have it, not a claim that other breeds lack a known origin year.