Behavioral Breakdown in Dogs:
The Role of Emotional Thresholds and Reinforcement Failure
This is a long-form, research-based article that explores the concepts behind behavior change in depth. If you’re looking for shorter, practical breakdowns and real-life examples, visit our video library (The Pub Dog Project) and social channels.
There is a point most dog guardians recognize.
A dog that used to come when called stops coming. Not gradually. Not in a way that feels like normal variation. It shows up as a break. The same dog, in the same situation, suddenly responds differently.
The cue is given, and instead of turning back, the dog continues moving. Sometimes it pauses, looks briefly, and then leaves anyway. Sometimes there is no acknowledgement at all.
What makes this moment distinct is not the failure itself, but the contrast with what came before it.
Earlier in development, recall appears almost effortless. The dog follows closely, orients easily, and responds quickly to the cue. Reinforcement is frequent, often built into proximity. The environment is limited in scope, and competing stimuli are relatively low in intensity or novelty. Under those conditions, recall stabilizes quickly. It begins to feel reliable.
As the dog gains access to more space, that apparent reliability carries forward. The same cue is used. The same reinforcement is offered, though often less frequently. The assumption is that the behavior will hold under expanded conditions. For a period of time, it does.
Then the response changes. The dog encounters something in the environment—movement, scent, another animal, an unfamiliar person—and the recall cue no longer produces the same outcome. Latency increases or the behavior drops out entirely. The dog that previously oriented and returned now continues forward, disengaged from the handler.
From the outside, nothing appears to have changed. The cue is the same. The handler is the same. The reinforcement is the same. The behavior, however, is not.
The most common explanations for this moment are stubbornness and failed training. Both locate the problem in the dog's intention or the handler's method. Neither accounts for what has actually changed — the dog's capacity to respond under current conditions.
This pattern appears across the dog's life. It shows up after a move, during recovery from illness, in new environments, and in the quieter shifts that come with age. It becomes most visible during adolescence, where it arrives predictably, dramatically, and with little warning—making it the most useful place to examine the mechanism. If it is clear there, it can be recognized anywhere.
It is also where the cost of misreading it is highest—coinciding with the peak age for relinquishment (Owczarczak-Garstecka et al., 2023).
Threshold and Capacity
To understand why this happens, we need to start with a concept that is fundamental to applied animal behavior but rarely explained to the people who need it most: the threshold.
A threshold refers to the physiological point at which the nervous system can no longer support normal processing (Overall, 2013; Lindsay, 2000).
Below that point, a dog can orient, disengage, and respond to known cues. Above it, those capacities degrade. The behavior does not disappear from the repertoire, but access to it becomes inconsistent or unavailable.
When recall breaks in the way described above, the visible change is behavioral. The underlying change is in capacity. The dog that previously oriented and returned is now operating closer to, or beyond, its functional threshold. Under those conditions, the same cue produces a different outcome because the system supporting that response is no longer stable.
This is often interpreted as non-compliance or disobedience. In reality, the change is occurring in the nervous system, limiting the dog’s ability to access learned behavior. The processes driving that change—altered arousal, attention, and response selection—occur whenever the dog's internal state shifts.
Thresholds are not fixed. They move in response to arousal, environmental complexity, duration of exposure, physical condition, accumulated stress, and prior experience (Lindsay, 2000). A response that appears reliable in one context may degrade in another without any change in training history.
The relationship between dog and handler functions as part of this regulatory system. A secure bond with a primary caregiver modulates activity in the hypothalamic-pituitary-adrenal (HPA) axis and alters stress responsivity (Asher et al., 2020; Brubaker & Udell, 2022; Dietz et al., 2018). Dogs with secure attachments tolerate greater environmental complexity before reaching functional overload.
This is a measurable effect. The handler’s presence, predictability, and interaction history influence how the dog processes and responds to the environment at a physiological level.
When that regulatory function is disrupted—through accumulated stress, environmental load, or developmental change—the threshold lowers. Conditions that previously supported stable behavior no longer do.
Nothing broke. The conditions changed.
The next question is why behavior that previously worked no longer holds under those conditions.
Reinforcement and Salience
The dog and handler return to the same field the following day, this time with a higher-value treat. The dog ignores it.
This is often interpreted as a reinforcement problem—the reward is no longer good enough. The instinct is to upgrade: better treats, more exciting toys, higher stakes. Sometimes this produces a temporary improvement. Then the effect fades. The dog habituates, the environment remains, and the bunny wins again.
The problem is the position of the reinforcer in the dog’s hierarchy at that moment.
Reinforcement is anything that increases the likelihood of a behavior occurring again. It is not limited to a treat, a toy, or a word of praise. That determination is made by the dog, within its current context.
At any given moment, the dog is operating within a hierarchy of competing reinforcers— everything in the environment that can capture and maintain behavior. The recall cue asks the dog to disengage from one option and select another. For that shift to occur, returning must carry more salience than what the environment is offering (Herrnstein, 1974).
Salience refers to how strongly something stands out relative to competing stimuli. A treat that is highly salient in a quiet yard becomes less so in a field with movement, scent, and social stimuli. The reinforcer did not change. The landscape did.
This distribution of behavior across available options in proportion to their relative reinforcement is well established in behavioral research. It explains why a dog that appears reliable in controlled training becomes unresponsive in the field.
Research examining human-canine relationships through a parenting framework shows that the relationship itself functions within this same reinforcement system, with consistent differences in behavioral outcomes depending on guardian style (Volsche, 2015; Habib et al., 2025). High expectation paired with responsiveness to the dog's internal state is associated with secure attachment and greater persistence, while low responsiveness is associated with reduced engagement under challenge.
In reinforcement terms, the relationship itself carries weight in the hierarchy. A secure attachment increases the relative salience of the handler across contexts. When that relationship is weaker, the environment overtakes it.
Reinforcement failure is not the reward failing. It’s the reward losing the competition.
The Adolescent Disruption
The dog and handler head back outside to find the field. The handler has adjusted the reinforcer, invested in the relationship, and understands that the salience landscape shifts with context. And still, as the dog moves through adolescence, the previously reliable behavior becomes unfamiliar.
During the peripubertal period, the canine brain undergoes significant reorganization. The reward system becomes hypersensitive—novelty, movement, and social stimuli spike in value. Prefrontal systems responsible for impulse control and response inhibition lag behind. Dopamine signaling shifts, altering what the dog finds reinforcing and how strongly it pursues it. The HPA axis also reorganizes, changing how social rewards and environmental stressors are processed (Asher et al., 2020; Casey et al., [year]; Steinberg, [year]).
The field that was manageable at five months is no longer manageable at eight. Nothing in the field changed. The dog processing it did.
What distinguishes adolescence from other life-stage disruptions is the convergence of these changes. Thresholds lower while the reinforcement hierarchy reshuffles. At the same time, the value of social relationships—particularly with the primary caregiver—is being recalibrated.
Research by Asher et al. (2020) found that during adolescence, the odds of a dog failing to respond to a known command are 2.14 times higher when issued by the primary caregiver than by a stranger. The same dog that ignores a recall cue from its handler will often respond to the same cue from an unfamiliar person.
The behavior remains intact. What shifts is responsiveness within that specific relationship.
In social species, adolescence functions as a period of evaluation: whether to remain within the current group or disperse and establish independence. The brain reorganizes to support this process. Responsiveness to outsiders increases because they represent potential alternatives (Asher et al., 2020; Owczarczak-Garstecka et al., 2023). The guardian is part of what is being evaluated.
Attachment quality prior to adolescence influences how that evaluation unfolds. Dogs displaying insecure attachment behaviors before five months show earlier onset of first proestrus than those with secure attachments (partial correlation R = -0.423; Asher et al., 2020). Stronger attachment is associated with delayed reproductive maturation, extending the period of stability.
The relationship built before adolescence is not emotional scaffolding. It is a biological variable.
When the previously reliable dog ignores a recall cue and orients toward a stranger, the nervous system is not failing. It is operating within a developmental window where threshold and reinforcement systems are in flux, and where the relative value of relationships is being recalculated.
The Misinterpretation
The handler's response to adolescent disruption is logical. The problem is not the response itself, but the interpretation it is based on.
The dog performed this behavior reliably for months. The cue is familiar. The reinforcement is the same. The environment appears unchanged. The conclusion that follows is predictable: the dog is choosing not to comply.
That conclusion is wrong.
What is actually occurring is Intentionality Bias - a human cognitive tendency to automatically assume that other's actions are intentional, rather than accidental, even when evidence suggests otherwise. Handlers are interpreting reduced capacity as deliberate disobedience.
When a previously reliable behavior breaks down, the most available explanation is intent. The dog is stubborn. Dominant. Testing boundaries. Its personality has changed. This interpretation fits what the handler can see. It does not match what the dog is experiencing.
This misinterpretation is reflected in a counterintuitive pattern in guardian behavior. Volsche (2015) found a weak but meaningful positive correlation (r = .217) between high attachment scores and reported use of aversive training methods during adolescence. The guardians most attached to their dogs were somewhat more likely to reach for correction when behavior broke down.
This is not best explained by indifference or cruelty. It is better explained by social pressure and the meaning attached to public behavior. As Volsche (2015) identified, drawing on Ember & Ember's framework of status and perceived competence, a dog's public behavior is experienced as a reflection of the guardian's social standing. A dog that ignores a recall cue in front of others is not experienced as a neutral training problem. It is experienced as a visible failure.
That perception carries weight. It introduces urgency, frustration, and often shame. Under those conditions, increased pressure to correct behavior by any means can feel justified. The response does not come from a lack of care. It comes from investment in the outcome and sensitivity to how that outcome is perceived.
The result is predictable: increased pressure elevates stress in the dog and further disrupts communication.
Three specific errors follow from this misread.
The first is scaling up. When behavior deteriorates, the instinct is to do more: more exposure, larger environments, longer sessions. The adolescent dog often needs the opposite. The world needs to become smaller before it can expand again.
The second is attribution. “He knows this.” “She’s doing it on purpose.” These statements locate the problem in intention rather than capacity.
The third is location. Continuing to train in the same environment where the behavior is failing treats the breakdown as a performance problem rather than a capacity problem. The skill has to be rebuilt where the dog can still access it, then reintroduced to complexity.
The common thread across all three errors is information, not intention. The conditions changed, but nothing about the dog’s appearance signals that shift. The dog may look physically mature while the brain is still developing.
Expectations rise to match the body, while capacity reflects a brain still in transition. The result is often overwhelm—interpreted as “too much dog”—or the use of training methods that do not match the problem.
When the Real World Raises the Stakes
The same pattern becomes most visible in real-world environments, where the stakes are highest.
Public outings are often the first place this gap appears. The dog that performed reliably in controlled settings is now asked to maintain threshold stability, access reinforcement, and disengage from competing stimuli in environments that are unpredictable and continuously shifting. Stimuli arrive without warning, at varying intensities, from multiple directions. The hierarchy of competing reinforcers is no longer singular or predictable. It is layered, simultaneous, and difficult for the handler to meaningfully manage.
Duration compounds this problem. Training sessions are typically brief and structured to end before capacity degrades. Public exposure is not structured that way. As arousal accumulates, the dog managing the first portion of an outing is not the same dog managing it later. In some cases, outward signs remain minimal until the dog returns to a familiar environment, where the effects of the load become visible, often in ways that feel disconnected from the outing.
When this pattern repeats, it does not remain isolated to a single context. Repeated exposure to conditions that exceed the dog’s capacity, without adequate recovery, produces compounding effects – a process known as trigger stacking. Each stimulus encountered raises the arousal baseline from which the next is processed. What began as a recall failure may present later as reactivity, leash aggression, or shutdown. The behavior changes because the system supporting it has been under sustained strain.
At this stage, the gap between training performance and real-world performance becomes difficult to ignore. The dog appears inconsistent or increasingly difficult to manage. The original problem is no longer recognizable because it has been compounded over time.
During adolescence in particular, the convergence of lowered thresholds, shifting reinforcement value, and recalibration of social relationships creates rapid and often dramatic changes in behavior. Without a framework to interpret those changes, they are often understood as a fundamental shift in the dog itself.
Whether the context is a public environment, accumulated exposure, or developmental change, the underlying mechanism remains consistent. What shifts is how it is interpreted, and that interpretation is where the consequences emerge.
Without that understanding, repeated breakdowns are not seen as failures of conditions or capacity. They are seen as evidence of character or competence. The dog is difficult. The dog is reactive. The dog cannot be trusted. At the same time, the guardian’s experience shifts. Effort increases, but results do not hold.
Over time, the problem is no longer understood as a mismatch between conditions and capacity, but as a mismatch between dog and handler.
That is the point at which relinquishment becomes a consideration—not because of any single failure, but because the pattern has been repeatedly misread. The conclusion that the dog is fundamentally wrong, or that the guardian is fundamentally incapable, is not a starting point. It is the result of accumulated experiences interpreted without an accurate framework.
Understanding the mechanism does not remove the difficulty of these environments. It changes how they are navigated. When threshold, reinforcement, and relationship are treated as variables that shift across contexts, the gap between training performance and real-world performance becomes something that can be addressed, rather than something that defines the dog or the handler.
Conclusion
Return to the field.
The handler stands with a treat that once worked, calling a dog that used to turn immediately. Nothing about the cue has changed. Nothing about the reward has changed.
What changed is the system receiving it. What happens next depends on whether that change is recognized.
The dog remains trainable. The task is to adjust to the current conditions, not the ones that existed before.
Across every life stage, the same principle holds: expectations remain high, paired with responsiveness to the dog’s capacity in that moment.
References
Asher, L., England, G. C. W., Sommerville, R., & Harvey, N. D. (2020). Teenage dogs? Evidence for adolescent-phase conflict behaviour and an association between attachment to humans and pubertal timing in the domestic dog. Biology Letters, 16(5), 20200097.https://doi.org/10.1098/rsbl.2020.0097
Brubaker, L., & Udell, M. A. R. (2022). Does pet parenting style predict the social and problem-solving behavior of pet dogs (Canis lupus familiaris)? Animal Cognition.
Casey, R. A., Loftus, B., Bolster, C., Richards, G. J., & Blackwell, E. J. (2014). Human directed aggression in domestic dogs (Canis familiaris): Occurrence in different contexts and risk factors. Applied Animal Behaviour Science, 152, 52–63.
Dietz, L., Arnold, A. M. K., Goerlich-Jansson, V. C., & Vinke, C. M. (2018). The importance of early life experiences for the development of behavioural disorders in domestic dogs. Behaviour, 155(2-6), 83–114.https://doi.org/10.1163/1568539X-00003486
Ember, C., & Ember, M. (2005). Explaining corporal punishment of children: A cross-cultural study. American Anthropologist, 107(4), 609–619. (Cited in Volsche, 2015)
Habib, R., Kellershohn, J., & Tangri, K. (2025). Dining with dogs: investigating the impact of parenting styles on shared human-dog experiences. Consumer Behavior in Tourism and Hospitality, ahead-of-print.https://doi.org/10.1108/CBTH-01-2025-0022
Herrnstein, R. J. (1974). Formal properties of the matching law. Journal of the Experimental Analysis of Behavior. (Cited as 1974 in paper)
Lindsay, S. R. (2000). Handbook of applied dog behavior and training. Blackwell Publishing. (Cited as 2000 in paper)
Overall, K. L. (2013). Manual of clinical behavioral medicine for dogs and cats. Elsevier Health Sciences.
Owczarczak-Garstecka, S. C., Da Costa, R. E. P., Harvey, N. D., Giragosian, K., Kinsman, R. H., Casey, R. A., Tasker, S., & Murray, J. K. (2023). “It's Like Living with a Sassy Teenager!”: A Mixed-Methods Analysis of Owners' Comments about Dogs between the Ages of 12 Weeks and 2 Years. Animals, 13(11), 1863.https://doi.org/10.3390/ani13111863
Steinberg, L. (2001). We know some things: parent–adolescent relationships in retrospect and prospect. Journal of Research on Adolescence, 11, 1–19.
Volsche, S. L. (2015). An Investigation Into Human to Dog Attachment Systems and Their Influence on the Degree of Aversion Used in Training [Master's thesis, University of Nevada, Las Vegas]. Digital Scholarship@UNLV.
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