Why Does My Dog Lick Other Dogs' Urine?

In this guide

It's one of the less glamorous parts of dog ownership: watching a dog stop mid-walk to lick a patch of urine left by another dog, seemingly fascinated. Unpleasant as it looks to us, this is rooted in genuinely sophisticated canine communication rather than a random gross habit.

Urine as a social network

A dog's urine carries an enormous amount of information for another dog's nose, including sex, age, reproductive status, and general health. Investigating this scent closely, sometimes with prolonged sniffing and occasional licking, lets a dog gather details a quick sniff alone might miss, since licking brings the scent into direct contact with the vomeronasal organ, a specialised scent-processing structure in the roof of the mouth that plays a central role in reading pheromones. This is particularly pronounced around a female dog in season, whose urine carries hormonal signals that reliably draw intense interest from intact males, sometimes including prolonged licking and salivation.

Is it a health risk?

For a healthy, fully vaccinated dog, occasional investigation of another known, healthy dog's urine carries limited risk. The bigger concern is with unfamiliar dogs of unknown health and vaccination status, particularly in areas with a mix of pet and community dogs, since urine can carry infectious agents including parasites in some circumstances. Discouraging the habit around unfamiliar urine, rather than trying to eliminate the behaviour entirely, is a reasonable middle ground.

Managing it on walks

A reliable "leave it" cue, practised in low-distraction settings before being needed on a real walk, gives an effective way to redirect a dog's attention without a physical tug or a raised voice. Keeping walks moving at a steady pace rather than allowing extended investigation of every patch of urine along a popular route also naturally limits the behaviour. There's no need for alarm if it happens occasionally; it's simply a dog reading the neighbourhood news in the only way available to them.

Community dog hotspots

Lamp posts, compound walls, and the base of trees along a regular walking route often become well-used marking spots for a whole neighbourhood's dogs, pets and community dogs alike, and these spots tend to draw repeated, prolonged interest. Where a walking route passes one of these known hotspots daily, it's often easier to simply plan for a brief pause there with a firm "leave it" and a reward for moving on, rather than trying to avoid the spot entirely, since a determined dog will usually find a way back to investigate it regardless.

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