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4.0
average litter size (puppies)
verified
Parson Russell terrier: average litter size, Danish Kennel Club registrations Aug 2022-Jul 2023
as of 2026-09-20 · license: CC-BY-4.0
Source
BioMed Central / Springer Nature (Acta Veterinaria Scandinavica) — Allometry of litter size in dog breeds. Acta Veterinaria Scandinavica (2026). Additional file 2: 115 breeds' litters registered in the Danish Kennel Club, Aug 2022-Jul 2023, average litter size, and median breed body weight, with chondrodysplasia (C) and brachycephaly (B) markers.
https://actavetscand.biomedcentral.com/articles/10.1186/s13028-026-00862-9
retrieved 2026-09-20
Method
Quoted verbatim from the source above.