Why Dogs Become Reactive

Understanding Why Dogs Become Reactive: Insights from a Reactive Dog Expert

If you’ve ever found yourself wondering, “How or why did my dog become reactive?” here are some possible reasons. I’ve worked with hundreds of dogs who display reactivity for a wide range of causes. Understanding the root causes of reactive behaviour is essential to providing the right training and support. Reactivity in dogs can manifest in different ways, such as barking, lunging, or growling at specific triggers like other dogs, people, or even objects. In this post, I’ll explore the main reasons dogs become reactive and offer advice on how to manage and reduce this challenging behaviour.

Lack of Socialisation

One of the most common reasons dogs become reactive is due to a lack of proper socialisation during their critical developmental stages. Puppies need exposure to a variety of people, animals, environments, and experiences between the ages of 3 and 14 weeks. This period is crucial for building positive associations and preventing fear-based reactions later on. Dogs that miss out on this essential socialisation window are more likely to become fearful or reactive as adults.

Traumatic Experiences

Traumatic experiences, such as being attacked by another dog, can result in reactivity. Much like humans, dogs can develop post-traumatic stress disorder (PTSD) after a distressing event. This can lead to heightened anxiety and reactivity when they encounter situations that remind them of the trauma. For example, a dog that has been attacked might become reactive towards other dogs as a form of self-protection.

Fear Periods

You may find yourself wondering, “Why did my normally friendly dog suddenly become reactive?” This could be due to a negative experience during one of their ‘fear periods’, which can cause a loss of confidence. Dogs go through specific fear periods during their development, typically around 8-10 weeks and again during adolescence (6-14 months). If a dog experiences something unsettling during one of these fear stages, it can have lasting effects on their behaviour. Failure to support their confidence during these times can result in a dog becoming reactive. Owners need to be especially mindful and supportive during these stages to help their dog develop resilience.

Genetic Predisposition

Genetics can also play a significant role in a dog’s likelihood of becoming reactive. Certain breeds are more predisposed to reactivity because of their genetic makeup. For instance, herding breeds like Border Collies and Australian Shepherds are bred to be alert and reactive to stimuli. While genetics alone do not dictate a dog’s behaviour, they can influence how a dog perceives and reacts to the world around them.

Abandonment and Neglect

Dogs that have experienced abandonment or neglect often develop reactive behaviours. A lack of stability, security, and social interaction can lead to increased anxiety and fear, which often manifest as reactivity. These dogs may react aggressively out of fear of being abandoned again or because they lack the social skills necessary for positive interactions.

Pain and Medical Issues

At times, reactivity can be caused by underlying medical issues or pain. A dog in discomfort is more likely to be irritable and reactive. Conditions like arthritis, dental issues, or undiagnosed injuries can lead to significant discomfort, which can trigger defensive behaviours. If a previously non-reactive dog suddenly becomes reactive, it’s essential to rule out any medical problems with a thorough check-up from a vet.

Inadequate Training and Boundaries

Inadequate training and a lack of clear boundaries can also contribute to reactivity. Dogs need consistent and positive reinforcement training to understand what behaviours are acceptable. Without proper guidance, dogs may develop inappropriate ways of expressing themselves, including reactivity. Training should focus on building trust, confidence, and clear communication between the dog and their owner.

📍Dog Training Based in Ayr, Scotland serving Maybole, Crosshill, Girvan, Maidens, Dunure, Ayr and Alloway Dog Training
📬 Get in touch for support with dog behaviour, introductions, and positive training.

Reactive Dog Training South Ayrshire - Professional Dog Behaviour Training Ayr - Dog Training for Reactive Dogs South Ayrshire - Behaviour Modification for Reactive Dogs Ayrshire - South Ayrshire Reactive Dog Specialist - Dog Behaviour Consultation South Ayrshire