An aggressive, anxious, or fearful dog is often misunderstood. These behaviors typically stem from deep-rooted fears and can be triggered by various factors. An aggressive behavior in dogs requires careful evaluation to identify underlying causes and implement effective solutions.
Anxious dogs usually try to escape from whatever causes them fear or stress. If escape is not possible, they may freeze or adopt a submissive posture. Each dog reacts differently, making discomfort signals difficult for some people to recognize. Ignoring these signals can lead the dog to escalate to aggression or biting. After multiple ineffective warnings, the dog might learn to bite without prior warning.
Thus, it is crucial never to punish a dog for growling. Growling serves as a warning; suppressing this could remove a vital signal before a bite occurs.

The Impact of Insufficient Exercise
Poorly channeled energy is a common cause of aggressive behaviors. For instance, a dog lacking exercise may develop inappropriate behaviors, such as guarding a sofa or other objects. Herding breeds like the Border Collie need significant physical activity and chasing activities. Their needs can be satisfied by activities like playing fetch or involving them in tasks such as herding work.
- Behavior: Object guarding (e.g., sofa)
Recommended Activity: Physical games (fetch) - Behavior: Aggression towards cars or joggers
Recommended Activity: Controlled chasing activities
If these needs are unmet, aggression can be redirected towards inappropriate targets such as cars, cyclists, or joggers.
Why Take Aggression Seriously?

All aggressive behaviors must be addressed seriously. An aggressive dog poses a risk, especially if it is large. While it’s impossible to guarantee a dog will never bite again, it is often possible to significantly reduce the risk through appropriate training, exercise, and better understanding of the dog’s needs.
Conclusion
An aggressive dog is not necessarily dangerous but requires a thoughtful, methodical, and compassionate approach. Identifying causes, meeting physical and emotional needs, and avoiding inappropriate punishments are essential steps in reducing undesirable behaviors and promoting harmonious coexistence.