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Spark Jack Impossible Is Nothing

Registration n° LO2158840

Breeder
not recorded
Sire
Ell-Ell's Kingdom For A Heart
Dam
Spark Jack Hirish Coffee
Gender
Female
Date of birth
26 January 2021

Genetic indicators
The three figures are recalculated for the generations chosen.

COI — inbreeding

5.08%

Low. Common ancestors: Goldsand's Columbus, Jarnee/Jr Just A Matilda, Saltisgardens Snille O Smak, Brosing's Australian Ivory.

AVK — distinct ancestors

74.2%

46 distinct ancestors out of 62 possible. Among known ancestors only: 79.3%.

Pedigree completeness

93.5%

4 empty slots. The AVK takes them into account, so read both figures together.

Value for the breed's diversity

Common pedigree — rarer than 23% of the Jack Russells born in the last 15 years (since 2012)

How often its ancestors (over 10 generations) appear in the pedigrees of the 253 recent dogs: using dogs with a rare pedigree helps keep diversity in the breed. Over: 6 generations 8 generations 10 generations

Common ancestors and how they connect 4

Over 5 generations: each ancestor found on both the sire's and the dam's side, and what it adds to the COI.

AncestorSire's sideDam's sideShare of the COI
Goldsand's Columbus ♂ gen. 3gen. 4 gen. 4 2.34%
Jarnee/Jr Just A Matilda ♀ gen. 3 gen. 4 1.56%
Saltisgardens Snille O Smak ♂ gen. 4gen. 5 gen. 5 ×2 0.59%
Brosing's Australian Ivory ♀ gen. 4gen. 5 gen. 5 ×2 0.59%
COI over 5 generations5.08%

How the lines connect

Only the dogs that lead to a common ancestor are drawn. Each coloured line goes from a common ancestor down to its descendants. Click a dog to open its page.

Spark Jack Impossible I…Ell-Ell's Kingdom For A HeartEll-Ell's Kingdom For A…Ell-Ell's Kingdom HeartsEll-Ell's Kingdom HeartsEll-Ell's Don't Tell ColumbusEll-Ell's Don't Tell Co…Goldsand's ColumbusGoldsand's ColumbusSpark Jack Hirish CoffeeSpark Jack Hirish CoffeeGoldsand's BocelliGoldsand's BocelliDuckling's Jr Just in TimeDuckling's Jr Just in T…Duckling's Jr Just in MindDuckling's Jr Just in M…Saltisgardens Snille O SmakSaltisgardens Snille O …Goldsand's Doris lGoldsand's Doris lGoldsand's Bodil MGoldsand's Bodil MBrosing's Australian IvoryBrosing's Australian Iv…Jarnee/Jr Just A MatildaJarnee/Jr Just A Matilda

Sire's side Dam's side Coloured circles: common ancestors, same colours as in the pedigree

How these figures are calculated

COI — Wright's formula: F = Σ (½)n₁+n₂+1 × (1 + FA), summed over every path through a common ancestor A. The number of generations must be fixed for two dogs to be comparable: a more complete pedigree mechanically raises the figure.

AVK — distinct ancestors divided by the theoretical number of ancestors. Over 5 generations there are 62 possible slots. 100% means no ancestor appears twice.

Completeness — the share of slots actually filled in. The AVK is misleading without it: a half-empty pedigree shows a low AVK even with no inbreeding at all, simply because data is missing.

Read more: how the COI is calculated

Pedigree

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Offspring and relatives

Grouped by litter, with both parents at the top of each block. Click to see the puppies of a dog.

Direct offspring 1 litter · 1 dog

Litter of 28 February 2025Spark Jack Day Dreamer×Spark Jack Impossible Is Nothing1 ♂

Half-siblings, sire's side 2 litters · 2 dogs

Litter of 12 September 2022Ell-Ell's Kingdom For A Heart×Spark Jack Heineken1 ♂
Litter of 20 April 2021Ell-Ell's Kingdom For A Heart×Spark Jack Rebel Girl1 ♀
  • Spark Jack Magnetic Eyes♀ Spark Jack Magnetic EyesLo21101605White & Tan · Born & living in ItalyPLL-A ClearLOA ClearSCA ClearDM ClearPatella 0Full dentition