With over 400 recognized dog breeds, each shaped by natural and human-driven selection, breed differences in behavior present both opportunities and challenges for scientific research. Pongrácz & Dobos (2024) conducted a critical review of 97 studies comparing canine breeds to assess whether research designs yield biologically meaningful insights.
The authors identified three primary sampling methods: convenience sampling, hypothesis-driven ancestry-based sampling, and hypothesis-driven functional sampling. Each was evaluated using a SWOT framework. While convenience sampling remains common, it often risks producing results that lack ecological or evolutionary relevance. In contrast, ancestry- and function-based sampling provide more reliable insights into breed-related behavioral adaptations.
The review stresses that mismatched study design and breed choice may render conclusions biologically invalid. For example, drawing generalizations about cooperation or aggression from arbitrary breed groups may overlook key evolutionary and functional contexts. Instead, researchers are encouraged to adopt sampling strategies that align with the specific behavioral questions under investigation.
By applying a rigorous evaluation of current practices, the study highlights pathways to improve validity, reproducibility, and welfare relevance in future canine behavioral science. These improvements could strengthen both fundamental understanding of dog behavior and practical applications in training, breeding, and welfare assessment.
Source: Pongrácz, P., & Dobos, P. (2024). Behavioural differences and similarities between dog breeds: proposing an ecologically valid approach for canine behavioural research. Biological Reviews of the Cambridge Philosophical Society, 100, 68–84.
