ArticleFrontiers in veterinary science2026
Analysis of human-oriented facial signals of the domestic dog using eye tracker technology.
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Understanding canine facial signals is crucial for responsible dog ownership and animal welfare, yet how humans visually process these signals in breeds with extreme morphology remains under-researched. Methods: This study examined visual attention patterns using eye-tracking when humans viewed brachycephalic versus normocephalic dog faces. Forty-four undergraduate students viewed photographs of Boston Terriers (brachycephalic) and Jack Russell Terriers (normocephalic) depicting four emotional contexts: positive (Called by Name, Play) and negative (Separation, Stranger Threat). Eye-tracking measured fixation duration, number of visits, and saccades across eight facial regions (eyes, ears, cheeks, forehead, snout). Participants also self-reported which regions they believed they attended to most. Results: Brachycephalic dogs elicited 45-46% more visual attention across all frequency- based measures: longer total fixation duration (M = 1103.62 ms, SD = 1364.14 vs. M = 760.08 ms, SD = 1165.99; Discussion: These findings suggest that extreme brachycephaly is associated with increased visual processing demands, potentially requiring more frequent sampling to interpret facial signals. This may impair signal readability with important implications for animal welfare, veterinary practice, and human-dog communication.
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