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Breed statistics

Calculated from the 2,347 dogs in the database. The figures are only as good as the data: missing dogs and incomplete pedigrees make them less precise.

Dogs in the database

2,347

Born in the last 10 years

291

since 2017

Both parents known

92%

of the dogs born in the last 10 years (since 2017)

Countries

24

where Jack Russells born in the last 15 years (since 2012) live

Average inbreeding (COI) by year of birth

COI over 5 generations, only for dogs whose pedigree is at least 70% complete. A rising line means the breed is getting more inbred. Hover a bar for details.

0%2%4%6%200020052008: average COI 0.35% (5 dogs with a pedigree at least 70% complete)2009: average COI 5.66% (5 dogs with a pedigree at least 70% complete)20102011: average COI 4.69% (8 dogs with a pedigree at least 70% complete)2015: average COI 1.82% (6 dogs with a pedigree at least 70% complete)20152016: average COI 1.29% (8 dogs with a pedigree at least 70% complete)2017: average COI 3.83% (10 dogs with a pedigree at least 70% complete)2018: average COI 0.91% (9 dogs with a pedigree at least 70% complete)2019: average COI 1.28% (9 dogs with a pedigree at least 70% complete)2020: average COI 2.93% (13 dogs with a pedigree at least 70% complete)20202021: average COI 2.69% (14 dogs with a pedigree at least 70% complete)2022: average COI 2.06% (28 dogs with a pedigree at least 70% complete)2023: average COI 2.47% (16 dogs with a pedigree at least 70% complete)2024: average COI 2.45% (31 dogs with a pedigree at least 70% complete)2025: average COI 0.89% (23 dogs with a pedigree at least 70% complete)20252026: average COI 0.78% (38 dogs with a pedigree at least 70% complete)

Dogs born each year

Dogs recorded in the database, by year of birth.

010203040501997: 8 dogs born1998: 12 dogs born1999: 14 dogs born2000: 10 dogs born20002001: 13 dogs born2002: 19 dogs born2003: 11 dogs born2004: 21 dogs born2005: 9 dogs born20052006: 22 dogs born2007: 18 dogs born2008: 20 dogs born2009: 10 dogs born2010: 11 dogs born20102011: 23 dogs born2012: 9 dogs born2013: 11 dogs born2014: 13 dogs born2015: 18 dogs born20152016: 18 dogs born2017: 19 dogs born2018: 15 dogs born2019: 19 dogs born2020: 22 dogs born20202021: 28 dogs born2022: 37 dogs born2023: 30 dogs born2024: 44 dogs born2025: 27 dogs born20252026: 50 dogs born

Most used sires in the last 10 years (since 2017)

When a few males sire a large share of the puppies, their genes spread through the whole breed (« popular sire » effect). Share of the 273 puppies born in the last 10 years (since 2017) with a known sire.

  1. Gang-Staff Popeye 2022 17 puppies · 6%
  2. Hunter Hawk Sailor 2024 11 puppies · 4%
  3. White Almond d-Jog Hit 2023 8 puppies · 3%
  4. Rayban Jack For Love 2020 8 puppies · 3%
  5. Kindred Soul Go To Win 2014 8 puppies · 3%
  6. Original Edition du Bois de Compiegne 2018 7 puppies · 3%
  7. Port Fortis Yup-Yup 2020 6 puppies · 2%
  8. Totgree's Full of Mind 2023 6 puppies · 2%
  9. Totgree's Costantine 5 puppies · 2%
  10. Design da Vinci by Pemiko 2017 5 puppies · 2%
  11. Lovely-Orange Sensei II 2022 5 puppies · 2%
  12. Tsarodej Garry Cooper 2021 4 puppies · 1%
  13. Olener Getik Limited Edition 2017 3 puppies · 1%
  14. Mathias Jrt da Coroa Celta 3 puppies · 1%
  15. Picasso Russtyle's du Vallon de l'Alba 3 puppies · 1%
Most used sires of all time
  1. Bjorsatters Peer Gynt 19 puppies
  2. Kanix Speed Wagon 18 puppies
  3. Lemosa Mr Energizer 2006 17 puppies
  4. Gang-Staff Popeye 2022 17 puppies
  5. Huoleton Capricornus 16 puppies
  6. Coleann Brown Lagar 14 puppies
  7. Goldsand's Columbus 2008 13 puppies
  8. Malung Orinoco 11 puppies
  9. Malung Jim Beam 11 puppies
  10. Hunter Hawk Sailor 2024 11 puppies

Where Jack Russells live

Dogs born in the last 15 years (since 2012), by the country where they live (or were born, when it is not recorded).

  • France 109
  • Italy 38
  • Poland 35
  • Turkey 33
  • Germany 24
  • Norway 20
  • Russia 11
  • Sweden 10
  • Peru 9
  • Hungary 8
  • Ukraine 7
  • Spain 6
  • Latvia 4
  • USA 3
  • Austria 2
  • Croatia 2
  • North Macedonia 2
  • United Kingdom 1
  • Martinique 1
  • Belgium 1
  • Australia 1
  • Argentina 1
  • Slovakia 1
  • Finland 1

Health testing

Among the 291 dogs born in the last 10 years: the dogs that breed today and their recent puppies, so the figures show the situation of the breed now. For each test: how many dogs have a result, and the share of each result among the dogs tested. Results that are a concern are in red.

TestDogs testedResults
PLL-A 189 65% Clear 96% (182) Carrier 4% (7)
LOA 180 62% Clear 100% (180)
SCA 174 60% Clear 100% (174)
DM 125 43% Clear 88% (110) Carrier 12% (15)
Eyes 28 10% Clear 100% (28)
Patella 108 37% Grade 0 99% (107) Grade 1 1% (1)
Dentition 168 58% Full dentition 91% (153) Missing teeth 9% (15)