Sensory Enrichment for Dogs: Introducing New Smells and Textures

By Justin Shmalberg, DVM, CVA, ACVN, ACVSMR

Enrichment & Cognition · August 21, 2026 · 7 min read

The dogs I worry about least are the ones whose noses and paws still get surprised by something new every week.

A client brought in a seven-year-old Cavalier King Charles Spaniel named Biscuit last winter, worried that the dog had gone “flat.” Biscuit still ate on schedule, still walked the same loop around the block, still slept on the same corner of the same couch. Nothing was medically wrong. What had changed, once we talked it through, was that Biscuit’s world had quietly stopped offering anything new to smell or touch. Same yard, same toys, same route, for months. That’s not a health problem in the traditional sense, but it is a welfare problem, and it’s one I see constantly in dogs whose owners are doing almost everything else right.

Sensory enrichment for dogs isn’t a trend or a marketing category. It’s a description of something dogs are built to do: sample the world through the nose first, the mouth and paws second, and use that information to stay engaged and, often, calmer. Owners tend to think of enrichment as a puzzle toy stuffed with treats. That’s one piece of it. The piece that gets skipped is simpler and cheaper — new smells, new textures, introduced on purpose and in a way the dog can actually process.

The Nose Gets There First

Start with what a dog’s nose is actually doing, because it reframes everything else. According to VCA Animal Hospitals, dogs perceive and investigate their world primarily through scent, and the anatomy backs that up: a far larger area of nasal tissue dedicated to olfaction, plus a brain that devotes a disproportionate share of its processing power to interpreting what the nose picks up. A walk around the same block, to a dog, is never really the same walk twice — new dogs have passed through, weather has shifted volatile compounds, someone dropped a sandwich three days ago. But a walk around the same block for the thousandth time in a row does eventually flatten out, because the marginal new information shrinks each time.

That’s the part I try to get owners to sit with. It isn’t that a familiar walk stops mattering. It’s that a nervous system built to extract meaning from smell benefits from having genuinely new material to work with, not just repetition of the familiar.

What the Research Actually Shows

The evidence base here is strongest in shelter and kennel settings, where researchers can measure stress-related behavior before and after an intervention. A study on kenneled dogs found that olfactory enrichment changed behavior in a measurable way, according to PMC: Effects of Olfactory and Auditory Enrichment on the Behaviour of Shelter Dogs, which reported decreases in jumping and vocalizing alongside increases in climbing behavior when scent enrichment was introduced. A broader scoping review, ScienceDirect: The value of sniffing: A scoping review of scent activities for canines, pulled together the wider literature on scent-based activities and found consistent signals that structured sniffing opportunities support canine welfare across contexts, not just in kennels.

I’d caution against over-reading a shelter study onto a well-adjusted dog in a two-bedroom apartment — the baseline stress level isn’t the same, and the mechanism by which scent helps a stressed kenneled dog may not be identical to what it does for a bored but otherwise comfortable pet. What I take from this literature isn’t a specific protocol. It’s confirmation that scent isn’t a soft, feel-good add-on. It’s doing measurable behavioral work, and it’s cheap and low-risk enough that the burden of proof for trying it is low.

Texture Is the Enrichment Owners Skip

Smell gets most of the attention, but touch is doing quiet work too, and it’s the one owners forget to vary. Most dog beds, most floors, most toys in a given household land on a narrow band of the same two or three textures — fleece, rubber, and whatever the carpet is. A dog that only ever lies on soft fabric and walks on hardwood or grass has a fairly limited tactile diet, if you want to think of it that way.

In my practice, I’ve watched this play out with an eleven-year-old mixed-breed named Otis, a sixty-two-pound dog with early hip changes who’d started refusing the tile hallway between the kitchen and the back door. The owners assumed it was pain and, to be fair, some of it was — but part of it was that Otis had simply never had reason to build confidence on a slick, cold surface, and an already-cautious older dog with joint discomfort had no tactile reference point for trusting his footing there. We laid a runner with a textured rubber backing down that hallway, not as a medical fix, but so Otis had a predictable, grippy surface to build confidence on. Within about three weeks the owners reported he’d stopped hesitating at the doorway. That’s one dog, not a study, and I’m not presenting it as a general outcome — but it’s a good illustration of how texture and confidence are more linked than most owners assume.

Rotating textures doesn’t need to be elaborate: a snuffle mat with a different pile than usual, a cardboard box with the flaps left on, a patch of pea gravel versus the usual grass on a walk. If you haven’t used one, What Is a Snuffle Mat for Dogs, and How Does It Actually Work? is a good primer on how the texture and the scent-hunting mechanics work together, which is really the point — smell and touch enrichment overlap more than they compete.

Building a Rotation That Doesn’t Go Stale

The mistake I see most often isn’t a lack of effort. It’s a lack of rotation. An owner buys one snuffle mat, one textured chew, one lick mat, and uses the same three items on a loop until the dog stops caring. Novelty is the active ingredient, not the object itself. A four- or five-item rotation, swapped every week or two, keeps the “new” feeling new far longer than any single high-effort purchase.

Practically, I’d build that rotation across categories rather than buying five versions of the same thing. One olfactory item — a scent trail, a scattering of dried herbs safe for dogs, bedding borrowed from a friend’s dog for an afternoon. One textural item — a mat, a different walking surface, a box of shredded paper. One food-motivated option, since foraging behavior and sensory input tend to reinforce each other; if you’re deciding between styles there, Food-Dispensing Toys vs. Treat Balls: Which One Actually Fits Your Dog? walks through how those differ mechanically. And for puppies specifically, texture doubles as a teething outlet — Frozen Toys for Teething Puppies: What Actually Helps (and What Can Crack a Tooth) covers which textures are safe to freeze and which ones risk a fractured tooth.

Timing matters as much as content. A dog that’s wound up in the evening isn’t usually helped by a stimulating new smell right before bed — that’s a mental workout, not a wind-down cue, and if evening settling is the actual complaint, Why Your Dog Won’t Settle in the Evening is the more direct fix. Sensory enrichment earns its keep earlier in the day, or as a deliberate substitute for a walk you can’t take.

Where I Land

I don’t think every dog needs a curated sensory enrichment program, and I’d push back on anyone who frames it as mandatory the way, say, adequate protein or joint support might be. Most dogs get enough novelty from ordinary life — new visitors, a different route, weather changes — to stay behaviorally healthy without intervention. The counterargument I hear most, and take seriously, is that this can turn into one more thing on an already-long list of things a devoted owner feels obligated to do, and that guilt isn’t good for anyone, dog included.

Where I still land in favor of it is for the specific dogs where flatness, mild anxiety, or a plateau in confidence is already visible — the Biscuits and the Otises. For those dogs, the evidence on scent-based enrichment reducing stress behaviors and the plain anatomy of how much of a dog’s brain is built around smell both point the same direction: novelty processed through the nose and the paws is doing real behavioral work, not filling time. The owners I see most often getting this right aren’t running an elaborate program. They’re just making sure the same three toys and the same walking route don’t quietly become the entire sensory world their dog lives in.

A brief recap, since this covered some ground: dogs process their environment through scent first, texture close behind, and the research on kenneled dogs backs up that scent enrichment measurably changes stress-related behavior. Rotate rather than replace, keep the timing appropriate to the dog’s day, and treat texture as seriously as you already treat smell.