An intense response to a trigger that may include barking, lunging, pulling, freezing, spinning, or difficulty disengaging.
Common Signs
- Barking
- Lunging
- Pulling
- Fixating
- Stiff Body
- Freezing
- Slow Recovery
Important Distinction
Reactivity is a description of behavior, not a diagnosis. A reactive dog is not automatically aggressive, and two dogs showing similar outward behavior may be reacting for very different reasons.
What Can Help
Useful work begins with distance, management, recognizing threshold, improving handler timing, and creating controlled opportunities for the dog to notice a trigger without being overwhelmed.
When To Get Professional Help
Professional help makes sense when reactions are escalating, recovery is slow, walks feel unsafe, the dog has made contact, or the owner cannot create enough distance to train safely.
Related Dog Psychology
FearFear is an emotional response to something the dog perceives as threatening or unsafe. It may produce avoidance, freezing, escape attempts, barking,…AnxietyAnxiety is worry or anticipation about a possible threat or uncertain outcome. Unlike fear, which is often connected to something present, anxiety…ThresholdThreshold is the point where a dog's emotional intensity becomes too high for effective learning, thoughtful decision-making, or reliable response to familiar…ArousalArousal is a dog's level of mental and physical activation. It ranges from deep rest to intense excitement or stress and affects…Trigger StackingTrigger stacking occurs when multiple stressful, exciting, or challenging events build on one another before the dog has fully recovered. The combined…
Related Dog Training
ManagementManagement changes the environment to prevent unwanted behavior from being rehearsed while training is underway. It includes barriers, leashes, distance, schedules, storage,…Distance ManagementDistance management uses physical space to keep the dog within a workable emotional range. Increasing or controlling distance can prevent escalation and…CounterconditioningCounterconditioning changes the dog's emotional expectation by pairing a trigger with something the dog values. The goal is for the trigger to…DesensitizationDesensitization gradually exposes the dog to a trigger at an intensity low enough to remain manageable. The trigger becomes stronger only as…EngagementEngagement is the dog's willingness to notice, connect with, and participate with the handler. It is not constant eye contact. It is…
Related Training Option
Behavioral Consultation
Every dog brings a different history, environment, and reason for the behavior. This service can help identify the right next step and build a plan around the dog in front of you.
This library provides general education, not an assessment of an individual dog. Sudden behavior changes, pain-related behavior, or an immediate safety concern should be discussed with an appropriate veterinary or behavior professional.




