Flirt & Freeze in Dogs: Understanding This Common Canine Behaviour

By Norma Jeanne Laurette ​

Introduction

​We’ve all heard of the fight or flight concept, which is a physiological and physiological response presented by Walter Cannon in the early 1920’s. The fight or flight response states that when a person or animal senses danger, their sympathetic nervous system triggers the release of adrenaline, which prepares the body to either fight the threat or escape to safety. 

When discussing canine behaviour, the fight or flight response is universally recognized as a natural reaction to stress or threat; however, dog behaviour is far more multi-layered than just that. Two additional responses particularly in social encounters that are garnering the attention of behaviour experts are flirt and freeze. 
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Flirt and Freeze are intertwined, with freeze acting as a behavioural crossroads. A dog that freezes could break into play or lunge into a bite or fight depending on subtle factors in the environment and social cues. Understanding this flirt-freeze dynamic is crucial for dog guardians, trainers and anyone working with animal behaviour because although it may look the same, the freeze can result in very different outcomes.

The Flirt – Let’s Play

​The flirt response in dogs refers to playful invitation, as dogs exhibit this behaviour when initiating play with another dog or human. Classic flirt behaviours include the play bow (front end lowered, rear end up), exaggerated movements, submissive grin (similar to a human smile), side-to-side bounces as well as fast wagging tails held mid to high, helicopter tail, which rotates or the dog spinning and grabbing its own tail. These signals are designed to communicate a desire for friendly interaction R1.

Play behaviour is deeply rooted in the social development of dogs as it helps puppies learn boundaries, bite inhibition and cooperation. Even in adulthood, play is used as a way to reinforce bonds and release tension. Flirt behaviour is typically a proactive, voluntary combination of behaviours offered when the dog feels relatively safe, confident and happy R2.
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However, flirtation in dogs isn’t always innocent. Sometimes, especially in poorly socialized or anxious dogs, flirtation can have an edge with too much intensity, stiffness or assertiveness and act as a displacement behaviour with a conflicted dog. A rough or prolonged play bow that turns into stalking, mounting or body slamming may indicate arousal that is climbing to a dangerous level R3.

The Freeze – Play Or Fight

​The freeze response is a moment of absolute stillness, when a dog pauses mid-interaction. This can be blatantly obvious or incredibly subtle, so subtle that many guardians and trainers miss it. The freeze is the body pausing while the dog gathers information and makes a decision: Is this safe? Is it dangerous? Should I play? Should I disengage? Should I escape? Should I escalate? Should I fight?

Freeze behaviours are particularly important because they precede play, escalation or de-escalation. A dog that freezes during play may suddenly explode into a chase, play or just as easily snap, growl, lunge or bite R4. The freeze is therefore a pivotal signal marking a possible transition point between play, disengagement and aggression. This makes it essential for anyone supervising dog interactions to learn how to recognize and interpret the freeze accurately.
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The challenge lies in context. A freeze may follow a flirt cue and be interpreted as part of the play sequence however, if the dog feels threatened, trapped or overwhelmed the freeze becomes defensive marking the calm before a storm. What determines the outcome is often the other dog or person’s next move. A friendly, respectful gesture may trigger more play where an assertive or intrusive response could provoke a bite or fight R5.

The Body

​A dog’s body as a whole provides context for interpreting what will most likely follow the freeze. While the tail is often the most obvious cue, subtle signals from the ears, eyes, mouth and posture also help complete the picture of emotional intent. For example, ears pinned back with a tightly closed mouth and dilated pupils typically suggest fear or defensive behaviour and the dog could bite if escape is not an option R12. On the other hand, if the dog begins to soften its expression by blinking, licking its lips or shifting its weight away from the other dog or person, it could indicate de-escalation or appeasement R13.

The Tail

​A dog’s tail is a vital indicator of emotional state and intent, especially during moments of uncertainty, stress or fear. When a dog enters a freeze, the position and movement of the tail can reveal what may follow. If the tail is low and tucked tightly under the body, it can suggest fear or submission, signalling that the dog may attempt to flee, is about to shut down or defend itself. A high, stiff tail on the other hand can suggest tension with a readiness to escalate to what we’ve coined ‘deterrent behaviour’ or aggression, particularly if accompanied by other signs such as a hard stare or raised hackles R9. To learn about ‘deterrent behaviour’ see our first book Blueprint To A Happy Dog R16.

Tail – Left Or Right

​What happens after the freeze can often be predicted by subtle shifts or micro-expression in the tail. A slight wag of a low tail may suggest the dog is trying to de-escalate or is uncertain yet willing to engage peacefully, however the direction of the tail wag also has meaning. Research has shown that dogs wagging to their right side are likely feeling relaxed and open to approach, whereas a wag to the left can indicate negative and cautious emotional states R10. A tail that begins to rise, stiffen or wag predominantly left during or after a freeze could signal growing arousal and/or the potential for aggression, especially if the dog has ill intent or feels cornered R11. Understanding these subtle cues can allow handlers and guardians to respond appropriately to prevent potential escalation.

Posture

The distribution of weight in the dog’s body is especially telling after a freeze but can also give you cues during the freeze. A forward-leaning posture, especially when paired with a raised, stiff tail and hard stare could indicate intent to confront. On the other hand, a dog that shifts its weight away from the dog or person, lowers its body or begins to offer appeasement behaviours such as a play bow or averted gaze is more likely to disengage or avoid conflict R14.

Hackles

Also known as piloerection, many people misunderstand raised hackles assuming they always indicate aggressive intent but this simply is not true. When a dog raises its hackles it’s a sign of arousal of the nervous system and is involuntary, because dogs cannot control this reaction. Raised hackles can indicate ill intent but can also indicate uncertainty, fear, defensive behaviour or excitement. Like any other part of the body, hackles need to be put into context with the dog’s history, the environment, situation and what the rest of the dog’s communication is telling us to determine its true meaning.

Vocalizations

Vocalizations may also return post-freeze. A low growl paired with a stiff body often warns of imminent aggression, a high-pitched whine or bark may reflect distress or a desire to retreat and higher-pitched short repeat barks can indicate play.

Eye Contact

During a freeze, a dog’s eye contact can be one of the clearest indicators of its underlying intent or emotional state. A hard, direct stare often signals a warning showing that the dog is highly aroused, possibly fearful and prepared to escalate if the perceived threat doesn’t back off R27. In contrast, brief or darting glances can mean the dog is conflicted, uncertain whether to flee, appease or stand its ground R28. In social interactions, especially between unfamiliar dogs, this frozen moment paired with intense eye contact can either defuse tension if one dog looks away or quickly ignite into aggression if both hold the stare, interpreting it as a challenge R29.

Social Matching

​One of the most common reasons the flirt-freeze dynamic escalates to aggression is a mismatch in play styles, communication and/or social skills. Some dogs enjoy rough play while others prefer calmer interactions. A confident dog may misread a freeze from a shy dog as playful behaviour and respond by increasing its play energy, which can overwhelm the dog. This increase can quickly turn a freeze into a defensive growl, snap or bite. To learn more about communication styles refer to our first book Blueprint To A Happy Dog R16.  
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Dogs with limited social skills or a history of trauma may rely on freezing more often or more intensely as a coping strategy. Without the social tools to flirt and disengage smoothly, they default to defensive freezing when they feel threatened. Recognizing this and teaching other dogs (and people) to respect their boundaries is vital to preventing conflict R6.

Breed Tendencies

​Breed tendencies also play a significant role. For example, herding breeds naturally use freeze-and-stalk behaviours as part of their instinctive patterns, which can easily be mistaken for predatory or aggressive intent, even when they’re just playing. Terriers, on the other hand are more prone to shifting quickly from freeze to fight if pushed beyond their tolerance R7. Because of this, understanding your dog’s breed-specific traits is essential for accurately reading their signals.

Context

​A dog may show similar behaviours in both playful and aggressive situations, which is why it’s important to always read all of their signals, not just one. No part of the body communicates alone – we always need to consider the posture, ears, eyes and tail, as well as the environment, situation and what we may know about the dog’s history to gain a clear understanding of where the freeze may lead R15.

Human Intervention

​The key to safety when managing flirt and freeze behaviours lies in prevention, observation and early intervention. The first step is only putting suitable dogs together for play, dogs with similar play styles, confidence, energy and social skills. When dogs are playing, look for fluid movement, regularly switching roles, soft faces, loose bodies, tails to the right and frequent pauses. If one dog suddenly becomes still, tucks its tail, raises a stiff tail, moves it to the right or gives a hard stare, if the other dog doesn’t respect its space or its energy increases – it could result in a fight.

Early, positive training and socialization programs teach dogs how to respond appropriately to both flirt and freeze. It reinforces polite greetings, teaches canine communication skills and disengagement cues and provides them with positive learning experiences with a variety of dogs.
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For humans, stepping in before the freeze tips to aggression can prevent bites and fights and rebuild trust. Calling a time-out, redirecting energy or simply separating the dogs for a brief reset can make all the difference R8.

Safely Breaking Up A Freeze With Aggressive Intent

Intervening when a dog is frozen and on the verge of aggression is tricky and risky because that freeze is often the last moment before a lunge or bite. The sudden movement of reaching for the dog can break the freeze and trigger an attack, which is why handlers should avoid direct physical contact in these moments R17. Instead, the safest approach is to remain calm, avoid sudden movements and focus on increasing distance between the dog and its victim whenever possible R18. Tools such as barriers to slide between them, slip leads or poles, coats to throw over them and distractions can often help safely diffuse the situation R19. Understanding canine communication and body language and respecting the freeze response is crucial to preventing bites and ensuring everyone’s safety R20.

How To Break Up A Dog Fight

Because the shift from freeze to attack can occur with little or no warning, being prepared in case of a dogfight is crucial to preventing injuries or at least keeping them to a minimum R24. Breaking up a dogfight can be dangerous for both dogs and people so it’s important to understand safe and effective options R25. If a fight breaks out, stay calm and avoid grabbing collars or reaching between the dogs as this can lead to serious injuries R25. 

Your options include making a loud noise such as clapping, shouting or banging something nearby to startle the dogs and interrupt the fight. If that doesn’t work, try sliding something between them such as a board, small table or chair, or slide a slip lead or humane catchpole snare around the aggressor’s neck. Other options include lowering a coat between them or throwing one over the head of the aggressor to block its vision. You can also try using water from a hose or a large bucket to separate them. 

With the ‘wheelbarrow’ method, if two people are available, each person would grab the hind legs of one dog and lift them up like a wheelbarrow, then pull the dogs away from each other while circling in a wide arc R26. This reduces the chance of redirecting a bite onto you. If you are the only person available, grasp the hind legs of the aggressor. A last ditch option would be pepper spray as it’s better than serious injury but should only be used as a last resort for obvious reasons. Once the dogs are separated, move them immediately to a safe distance or secure area to prevent re-engagement. After any fight, always check for injuries and seek medical help if required R4.

Flirt and freeze describes a subtle but important part of canine social behaviour in which a dog alternates between playful, inviting gestures (the ‘flirt’) and sudden pauses or stillness (the ‘freeze’). This pattern helps dogs communicate intentions, test boundaries and de-escalate tension during play or greetings. Understanding this combination of movement and stillness allows guardians and trainers to better interpret canine body language, support healthy interactions and prevent misunderstandings that could lead to conflict. Recognizing flirt and freeze signals is essential for promoting safe, positive socialization among dogs.

Flirt and freeze are both forms of communication that share important information and it’s our job to pay attention. When we miss these cues we set our dogs up to fail. By learning to recognize the subtle language of flirt and freeze we develop a more compassionate and responsible way to support healthy canine interactions and relationships. This understanding can help prevent behavioural problems, improve play skills and strengthen the trust between canine companions as well as people and their dogs.

References

​R1: Bekoff, M. (2001). Social play behaviour: Cooperation, fairness, trust and the evolution of morality. Journal of Consciousness Studies, 8(2), 81–90. Explores the evolutionary function of play in social species.
R2: Horowitz, A. (2009). Inside of a Dog: What Dogs See, Smell and Know. Scribner. Discusses the cognitive and emotional motivations behind play and social behaviours in dogs.
R3: Bradshaw, J. (2011). Dog Sense: How the New Science of Dog Behaviour Can Make You A Better Friend to Your Pet. Basic Books. Explains how arousal affects dog behaviour and communication.
R4: Donaldson, J. (2005). Culture Clash. James & Kenneth Publishers. Identifies the freeze as a critical moment in canine social encounters.
R5: McConnell, P. (2002). The Other End of the Leash. Ballantine Books. Analyzes how humans often miss or misinterpret canine body language, including the freeze.
R6: Overall, K. L. (2013). Manual of Clinical Behavioural Medicine for Dogs and Cats. Elsevier Health Sciences. Details behavioural responses, including freeze, in stressed or reactive animals.
R7: Serpell, J. A. (Ed.). (2017). The Domestic Dog: Its Evolution, Behaviour and Interactions with People (2nd ed.). Cambridge University Press. Includes breed-specific tendencies in social and play behaviours.
R8: Miller, P. (2008). Play With Your Dog. Dogwise Publishing. Offers guidance on managing and interpreting canine play safely.
R9: Lindsay, S. R. (2001). Handbook of Applied Dog Behavior and Training, Vol. 1: Adaptation and Learning. Iowa State University Press. Details canine body language and tail postures as predictors of behavioral outcomes.
R10: Quaranta, A., Siniscalchi, M., & Vallortigara, G. (2007). Asymmetric tail-wagging responses by dogs to different emotive stimuli. Current Biology, 17(6), R199–R201. Demonstrates that right-sided tail wags indicate positive emotions, while left-sided wags reflect negative ones.
R11: McConnell, P. B. (2002). The Other End of the Leash: Why We Do What We Do Around Dogs. Ballantine Books. Discusses human-dog communication and how recognizing tail cues can prevent conflict.
R12: Horwitz, D. F., & Mills, D. S. (2009). BSAVA Manual of Canine and Feline Behavioural Medicine (2nd ed.). British Small Animal Veterinary Association. Describes behavioral signs associated with fear and aggression.
R13: Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier. Offers clinical insight into stress-related behaviors and how body language indicates emotional transitions.
R14: Shepherd, K. (2009). Behavioural Medicine for Dogs and Cats. Saunders. Emphasizes body posture and movement as predictive tools in canine behavioral assessments.
R15: Bekoff, M. (2007). The Emotional Lives of Animals. New World Library. Highlights the interplay of multiple body signals and environmental context in interpreting animal behavior.
R16: Laurette, N. J., & Ceci, G., 2025. Blueprint To A Happy Dog. [Self-published].
R17: Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier. — Describes canine aggression signals and the risk of approaching a frozen dog.
R18: Donaldson, J. (2010). Mine! A Practical Guide to Resource Guarding in Dogs. Dogwise Publishing. — Practical strategies for safe separation and management of tense dogs.
R19: McConnell, P. B. (2002). The Other End of the Leash: Why We Do What We Do Around Dogs. Ballantine Books. — Discusses safe techniques for redirecting and managing dog interactions.
R20: Yin, S. (2009). Low Stress Handling, Restraint and Behavior Modification of Dogs and Cats. CattleDog Publishing. — Covers reading body language and handling dogs safely in high-arousal situations.
R21: Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier. — Describes using safe redirection and understanding the freeze response in aggression.
R22: McConnell, P. B. (2002). The Other End of the Leash: Why We Do What We Do Around Dogs. Ballantine Books. — Explains practical interrupters like noises and food scatters for safe handling.
R23: Yin, S. (2009). Low Stress Handling, Restraint and Behavior Modification of Dogs and Cats. CattleDog Publishing. — Outlines safe distraction tools and techniques for handling tense dogs.
R24: Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier. Practical guidance on dog aggression, conflict prevention and safe intervention strategies.
R25: Dunbar, I. (2003). Dog Behavior: An Owner’s Guide to a Happy Healthy Pet. Howell Book House. C26vers basic principles of dog behavior and safe handling in emergencies.
R26: McConnell, P. B. (2002). The Other End of the Leash: Why We Do What We Do Around Dogs. Ballantine Books. Discusses safe techniques for handling tense or aggressive dog interactions.
R27: Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier. Describes body language signals in dogs, including eye contact and aggression.
R28: Beaver, B. V. (2009). Canine Behavior: Insights and Answers (2nd ed.). Saunders. Discusses conflict behaviors and visual signals like glancing or avoidance.
R29: Yin, S. (2009). Low Stress Handling, Restraint and Behavior Modification of Dogs & Cats. CattleDog Publishing. Explains social communication between dogs and how eye contact can escalate or diffuse tension.

Photo By Greg Ceci