30/05/2026
WHY IS MY DOG REACTIVE?
This is a big question with a complex answer, but the two most common causes of reactivity that we see are:
1. FEAR
Fear is probably the most common reason dogs become reactive.
This doesn't mean there's anything wrong with your dog. Just like people, some dogs are naturally more cautious or sensitive than others.
It's also worth remembering that many breeds were selectively bred to alert their owners to potential threats. Barking and reacting to unfamiliar people, dogs, or situations was often a desirable trait, particularly in guarding breeds.
The good news is that fearful dogs can learn to respond differently. Through consistent training and improved impulse control, they can learn calmer, more appropriate behaviours when faced with things that worry them.
2. OVER-EXCITEMENT & FRUSTRATION
The second most common cause of reactivity is over-excitement leading to frustration.
This often develops when an already excitable puppy or dog is allowed to greet and interact with every person or dog they encounter. Over time, they begin to expect that every sighting of a dog or person will lead to an interaction.
When that expected interaction doesn't happen, frustration builds.
Your dog sees another dog, gets excited, anticipates play or attention, and then becomes frustrated when access is denied. That frustration often shows itself as barking, lunging, whining, or other reactive behaviours.
In many cases, the reactivity isn't aggression at all—it's excitement that has become difficult for the dog to control.
CONCLUSION
Whatever the cause, reactive behaviour responses to triggers can be changed with the right training approach.
Success requires time, consistency, and clear communication. It also means preventing your dog from repeatedly practising the unwanted behaviour while teaching them a better alternative.
If you'd like help with your reactive dog, get in touch and ask about our Reactive Dog Programme.
https://www.forbesdogtraining.co.uk/training/dog-behaviour-modification
