Leash walking
Why does my dog mark on every tree during a walk?
Last updated 23 September 2026 · How we write and check this
Short answer
Marking with small amounts of urine is a scent based communication behavior, most common in intact male dogs but also seen in females and neutered males, and it tends to increase in areas with lots of other dogs' scent, like popular park entrances. It is different from a full bladder emptying, since a dog that marks 10 or more times on one walk is usually leaving small deposits rather than genuinely needing to go each time. Neutering can reduce the frequency in some dogs but rarely eliminates it entirely once the habit is established.
What marking communicates
Each mark leaves information for the next dog that passes, including details other dogs can pick up about sex and reproductive status, which is why marking spikes near well used routes, lamp posts, and other dogs' favorite spots rather than happening evenly throughout a walk.
When frequent marking becomes a training question
If marking is slowing walks down significantly or your dog is straining to stop at every post, teaching a short leash cue that means keep moving, rewarded for continuing past a spot without stopping, can restore some pace to the walk without removing marking altogether.
Key takeaways
- Marking is scent communication, not simply emptying the bladder.
- It increases near busy routes and other dogs' favorite spots.
- A keep moving cue can restore walk pace without eliminating marking entirely.