Cognitive enrichment and mental stimulation help anxious dogs by occupying attention, building confidence through success, and reducing the vigilance that underlies anxiety.
Cognitive enrichment for anxious dogs is a welfare intervention that addresses anxiety at both the symptomatic and structural level. Occupying a dog's cognitive resources with interesting, achievable problem-solving tasks reduces the availability of those resources for anxious rumination and hypervigilance. Nose work in particular appears to have calming effects that exceed the simple distraction of the activity - the olfactory engagement and natural success rate of finding scent may trigger specific calming physiological responses. The confidence built through systematic positive reinforcement training - learning that effort produces predictable reward - directly counters the unpredictability-sensitivity that characterizes anxiety. Enrichment is most effective as part of a comprehensive anxiety management plan including environmental management and sometimes medication.