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Your dog has already had a wee, but the next lamppost deserves another contribution. Then the bench gets one, and perhaps a particularly important clump of grass. It can feel as though the walk is being conducted one small instalment at a time.
Dogs Trust describes scent marking as leaving a small amount of urine to communicate with other dogs. Females can do it too1. That does not make every small wee a mark, especially when the pattern changes or passing urine looks difficult.
A mark can start a conversation without a meeting
In one study, researchers presented urine from unfamiliar dogs and familiar groupmates, and also observed marking at a dog park. They distinguished urine deposited on an existing mark from urine left nearby. Those two responses did not follow identical patterns3.
In the controlled presentations, only males overmarked, while adjacent marking was directed only at unfamiliar samples. At the park, both males and females investigated and contributed to shared marking spots. The authors proposed social and sexual functions, rather than a single purpose for all marking3.
Neutering did not significantly change the likelihood of countermarking in that study. That result concerns a particular response to other dogs' urine; it is not a trial of treatment for indoor accidents3.
This is why “he is claiming everything” is more interpretation than description. What you can observe is where the dog sniffs, whether urine follows and whether the pattern is familiar. Deciding exactly what another dog reads from that deposit is a separate question.
Even the person holding the lead can matter
Researchers followed 100 shelter dogs during walks with unfamiliar men and women. Each dog walked with at least one walker of each sex; there were five walkers in all. Male dogs urinated more frequently with women, while female dogs' urination rates did not clearly differ4.
Most subjects were neutered. The study was conducted at one American shelter, and the walkers differed in age as well as sex. Researchers did not measure the dogs' physiological stress responses, so interpreting the difference as fear remained a proposal4.
Males also more often used a lean-forward posture with men, but that particular comparison fell just outside the conventional statistical threshold, at p=0.052. The result should not become a confident rule about posture, fear or who makes the best dog walker4.
The useful point is that the surroundings and the people present can matter to a recorded behaviour. Counting wees without describing the walk leaves part of the observation out.
Do smaller dogs really mark more?
A large owner-questionnaire study included reports on 8,301 dogs from 49 breeds. It related breed-level behavioural averages to physical characteristics. Shorter breed height was associated with more reported urine marking, alongside several other reported behaviours5.
The distinction between a breed average and an individual matters. This was not an experiment in which reducing a dog's height made them mark more. It also relied on owners' reports and could not separate inherited differences from the ways people kept and treated different dogs5.
The researchers noted possible reporting bias, differences in early environment and breed history as alternative explanations. A correlation with height does not diagnose the reason for your own dog's indoor wee or tell you what help they need5.
A small dog and a large dog can both deserve the same careful description: what changed, where it happened, and whether going to the toilet looked comfortable. Size is context, rather than a substitute for those observations.
New physiology research remains exploratory
A small experiment analysed 11 unneutered male dogs after six of the original 17 were excluded. The dogs encountered urine from one male donor and one female in heat. Researchers examined marking distance, facial behaviour and substances measured in the dogs' urine6.
More distant marking was associated with some urinary hormone and neurotransmitter measurements, including cortisol. This was preliminary work with a highly selected sample. The final experiment did not retain a neutral swab control, and it involved only one donor of each sex6.
The study examined associations, without establishing a simple emotional translation for a mark. It did not measure the proposed brain mechanisms directly or test a household treatment. Measuring hormones in urine also involves timing limits discussed by the authors6.
Interesting research can make the picture richer while leaving the practical answer cautious. It gives us another reason to resist translating the number, height or location of your dog's marks into a ready-made personality label.
Indoor wees need a health check first
Dogs Trust lists medical conditions, stress, environmental changes and altered routines among reasons a previously trained dog may toilet indoors. It recommends veterinary assessment before treating the problem as behavioural. Calling the deposit a mark does not rule out illness1.
PDSA identifies bladder stones as one possible cause of frequent small wees, straining, pain, blood in urine or indoor accidents. Some affected dogs show no obvious symptoms. Signs overlap with other urinary problems, so they cannot confirm stones without assessment7.
Depending on the findings, a vet may examine the dog, request a urine sample and recommend imaging or other tests. Treatment varies with the type and location of stones; copying another dog's diet is not a substitute for finding the cause7.
Animal Trust advises noting whether any urine is passing and roughly how much while arranging care. Blood together with pain, lethargy or vomiting, a painful or swollen abdomen, and repeated unsuccessful attempts need immediate veterinary attention2.
If the problem occurs only in a particular situation, describe that too. A vet can work with the pattern you have observed without you having to choose between “medical” and “behavioural” before making the call.
Rebuild a routine your dog can manage
After medical concerns are addressed, Battersea recommends predictable opportunities to toilet: after waking, eating or drinking, after play, before bed and at suitable intervals. Praise calmly when your dog toilets in the intended place. A short log can help identify patterns8.
A practical restart
Battersea advises avoiding punishment. Telling a dog off can make them worried about toileting around you, so they may hide or become reluctant to go nearby. If difficulties persist after medical problems are ruled out, seek qualified behavioural support8.
Neutering is an individual veterinary discussion. Dogs Trust notes that it may reduce inappropriate marking, particularly in males, while some dogs continue to mark afterwards. It should not be presented as a guaranteed solution1.
For a household log, a simple entry might read: “Small amount beside the sofa after visitors arrived; normal outdoor wee earlier.” That is more useful than “being stubborn again”, because it records something another person can help you investigate.
Clean the spot without making a scene
Battersea recommends enzymatic cleaning beyond the visible patch to catch splashes. Avoid ammonia-based cleaners, which may encourage a return to the area. Follow the product's instructions8.
Separating the tasks can make this feel more manageable: get the dog outside or settled safely, deal with the floor, then note what happened. The observation is for understanding the pattern, not keeping a score against your dog.
A lamppost contribution on a comfortable walk and a new problem beside the sofa call for different questions. You can leave room for ordinary canine communication while taking changes in toileting seriously.
Sources and further reading8 sources
The small numbers in the article link to the source behind each fact. Sources open on their own websites.
- Why toilet-trained dogs have accidents
- Symptom: Straining to Urinate - When Should I Contact a Vet?
- Effects of sex, social status and gonadectomy on countermarking by domestic dogs, Canis familiaris
- Sex of Walker Influences Scent-marking Behavior of Shelter Dogs
- Dog Behavior Co-Varies with Height, Bodyweight and Skull Shape
- Decoding dog communication through the physiology and behavior of urine marking
- Bladder stones in dogs
- How to toilet train a puppy or dog