Study urges canine cognition research to follow the nose: full analysis

A newly published study in Animals is pushing a familiar canine cognition test in a less familiar direction: toward smell. In “From Control to Clue: Integrating Olfaction into the Object-Choice Task for Domestic Dogs,” Sylvie Bergquist and Alexandra Horowitz report on an olfactory adaptation of the object-choice task, arguing that a field built largely around visual cues may be missing how dogs actually gather and use information. The study included 48 dogs and was published April 26, 2026, in a special issue focused on canine olfaction. (mdpi.com)

That critique has been building for years. Dogs are often studied in paradigms that ask them to follow human pointing, gaze, or object placement, even though olfaction is central to their everyday behavior and social investigation. Earlier object-choice research has mostly centered on visual and gestural cueing, while other recent work has tried to create more natural scent-based tests that do not depend on heavy pre-training. Reviews published this year have likewise emphasized that canine olfaction research needs better standardization and stronger integration into mainstream cognition work. (link.springer.com)

In the new paper, Bergquist and Horowitz set out to “remedy” that imbalance by redesigning a prototypical dog-cognition experiment around odor. The article’s summary says the team developed an olfactory version of the object-choice task rather than treating smell mainly as a confound to be controlled away. While the search results available here do not provide the paper’s full methods and outcome tables, the study’s framing is clear: dogs can use olfactory cues in this decision-making context, and cognition tests should better reflect the species’ sensory priorities. (mdpi.com)

The paper also fits squarely within Alexandra Horowitz’s longer-running body of work on canine perception. Horowitz, who leads the Dog Cognition Lab at Barnard College, has repeatedly argued in both academic and public-facing work that dogs’ sensory world is fundamentally smell-forward. Barnard’s profile of her work highlights that emphasis, and earlier reporting on Horowitz’s research has described olfactory stimuli as especially ecologically relevant for dogs. (barnard.edu)

Direct outside reaction to this specific paper appears limited so far, which is not unusual for an early-stage cognition study published within the past two weeks. Still, the broader research community has been moving in a similar direction. A 2023 paper described a spontaneous three-choice olfaction task for adult and senior pet dogs, specifically aiming to reduce reliance on visual cues, while a 2026 review on dogs’ olfactory biology and working roles argued that task design, environmental control, and double-blind methods are important for separating true scent performance from handler influence. Taken together, those publications suggest this new study is part of a wider methodological shift rather than a stand-alone finding. (pmc.ncbi.nlm.nih.gov)

Why it matters: For veterinarians and behavior professionals, the practical takeaway is less about one laboratory task and more about what counts as evidence of canine competence. If dogs perform differently depending on whether a task privileges sight or smell, then clinical impressions about cognition, trainability, frustration tolerance, aging, or sensory decline may also change depending on how a patient is evaluated. That matters in behavior referrals, enrichment counseling, shelter assessments, geriatric workups, and conversations with pet parents about why a dog may seem disengaged in one context but highly capable in another. The study also reinforces a welfare point: species-appropriate testing and enrichment should align with the sensory modality dogs are most likely to use naturally. (mdpi.com)

There are also research-facing implications. Olfaction-inclusive paradigms could eventually help investigators build better comparative studies, reduce false negatives in cognition testing, and sharpen interpretation of breed, age, or disease-related differences. That may be especially relevant in senior-dog medicine, where subtle changes in sensory processing can affect behavior long before a pet parent describes obvious decline. This is an inference from the direction of the literature, rather than a direct claim of the paper itself, but it is consistent with the push toward more naturalistic olfactory assessment. (pmc.ncbi.nlm.nih.gov)

What to watch: The next question is whether these olfaction-centered tasks can be validated across larger and more diverse dog populations, and whether they prove useful in applied settings such as aging studies, behavior clinics, or working-dog evaluation. If that happens, smell may move from being something researchers try to eliminate in canine cognition studies to something they intentionally measure. (mdpi.com)