Dogs need both physical exercise and mental stimulation for full welfare. Mental enrichment that engages problem-solving, nose work, and behavioral diversity often provides more welfare benefit than additional physical exercise alone.
Mental enrichment is the under-appreciated dimension of dog welfare. While adequate physical exercise is widely understood as important, the cognitive and behavioral richness of a dog's daily experience receives less attention. A dog that walks for 60 minutes daily but spends the remaining 15 waking hours lying on a sofa with nothing to do is not experiencing full welfare. Mental enrichment through puzzle feeders, nose work, training sessions, novel environments, and appropriate social interaction engages the brain, provides behavioral diversity, and contributes to the positive emotional states that define good welfare. The welfare investment is proportionally small relative to the benefit.