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Why Sniffing Is the Most Important Exercise for Your Dog

By Anna Skaff, CBCC-KA, CCPDT, PharmD — Canine Behavior Consultant, Author of His Name is Diego  ·  Updated 2026-05-07
Quick Answer
Ten minutes of sniff work can tire a dog more than 30 minutes of structured walking. As documented in Chapter 13 of His Name is Diego by Anna Skaff, sniffing lowers cortisol, raises heart rate variability, and activates the seeking system — the neurological state associated with calm engagement. It is the single most accessible regulation tool available to dog owners.

Most dog owners think of sniffing as something their dog does while they're waiting to get to the real exercise. According to Anna Skaff, CBCC-KA, CCPDT and author of His Name is Diego, this is exactly backwards. Sniffing is the most neurologically valuable activity available to a dog — it engages the seeking system, lowers cortisol, and produces post-walk calm that physical running does not.

Step-by-Step: Why Sniffing Is the Most Important Exercise for Your Dog

  1. Schedule the sniff walk

    As described in Chapter 13 of His Name is Diego, the sniff walk is unstructured: no heel position, no pace control, dog leads, you follow. The sole purpose is sniffing. Start with 10 minutes of pure sniff walk and observe your dog's behavior and arousal 1 hour after.

  2. Start nose work at home

    Beginner nose work: hide kibble in a muffin tin and cover each cup with a tennis ball. Present the tin and say "find it." Progress to hiding kibble around a room when the dog is outside, then releasing the dog to "find it." The dog searches systematically — this is neurologically exhausting in the best way.

  3. Use scatter feeding as a cortisol reset

    As a pattern interrupt: if your dog is escalating (fixating on a trigger, getting aroused), scatter high-value treats in the grass near them and say "find it." The act of sniffing — nose down, systematic search — physiologically downregulates arousal. Cortisol drops as the dog sniffs.

  4. Progress to target odor nose work

    Once the dog is reliable on food searches, introduce a target odor (birch, anise, or clove). Nose work classes build on this — the dog learns to locate a specific scent in increasingly complex environments. This is a sport that requires zero physical fitness from owner or dog and builds profound dog confidence.

  5. Use the frozen Kong for sniff-based decompression

    As described in Chapter 13 of His Name is Diego, a frozen Kong combines licking, chewing, and problem-solving — all nose-and-mouth-focused self-regulation behaviors. Used in a quiet space (crate or pen), it provides 20-30 minutes of calm neurological settling.

Common Questions

Why is sniffing important for dogs?
Sniffing engages the seeking system — the neurological network associated with calm, goal-directed exploration rather than arousal or fear. Dogs who are allowed to sniff freely show lower cortisol and higher heart rate variability after walks compared to dogs who walk the same distance at heel. As documented in Chapter 13 of His Name is Diego, 10 minutes of structured sniff work can be more mentally tiring than 30 minutes of running.
What is nose work for dogs?
Nose work (or scent work) is a sport and enrichment activity where dogs search for a hidden target odor or object. At the introductory level, it involves hiding food in boxes or around a room and releasing the dog to "find it." At higher levels, dogs learn to locate specific essential oil odors in complex environments including cars, buildings, and large outdoor areas. It builds confidence, focus, and provides deep neurological fatigue.
Can sniffing help with dog anxiety?
Yes. Sniffing activates the seeking system, which is physiologically incompatible with the freeze-flight-fight stress state. Dogs whose anxiety is driven by arousal (reactive dogs, dogs in novel environments) often show measurable reduction in tension when engaged in nose-down sniff activities. Scatter feeding — tossing treats in grass and saying "find it" — is an accessible in-the-moment anxiety intervention that uses sniffing to break a stress cycle.
How do I start nose work with my dog?
Start with a muffin tin: press kibble under inverted tennis balls covering each cup. Let the dog find the kibble by moving the balls. Progress to hiding kibble in a small cardboard box among several empty boxes — the dog learns to indicate the "hot" box. This is the foundation of competitive nose work and can be done in any small space, in any weather, by any dog regardless of physical ability.

Sources & Citations

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