Why is my dog aggressive towards other dogs? What can I do?

Why is my dog aggressive towards other dogs? What can I do?

Aggression is a natural canine behavior, and almost every dog will show signs of aggression at some point in their lifetime. When a dog reacts to something using aggressive or reactive behavior (growling, barking, lip curling, etc), they are trying to tell you they want to add distance from whatever is triggering their emotion (a person, dog, garbage truck, etc). To help you manage your dog’s aggressive behavior, this article explains:

  • Why your dog behaves aggressively towards other dogs
  • How you can reduce aggressive behavior towards other dogs
  • What other pet parents are asking about aggression

Why does your dog behave aggressively towards other dogs?

There are a few reasons your dog might be showing signs of aggression:

  • Their social distance has been violated. Every dog has a “social distance zone” when it comes to other dogs and humans. Some dogs are comfortable with dogs and humans very close to them and others are not. Problems with reactivity and aggression usually arise when the “social distance zone” is violated by humans or other dogs, and the dog feels they have to be on the offense to keep others out.
  • They’ve experienced too many back-to-back stressful events. Stress can push dogs to be aggressive. For instance, if your dog experiences multiple instances of people violating their “social distance zone” on a particular day, they may be more likely to growl, snap or bite. This is because your dog is close, or at, their aggression threshold and has had enough.

How can you reduce or eliminate aggressive behavior towards other dogs?

To reduce your dog’s aggressive behavior toward other dogs, learn to read your dog’s body language and recognize when they’re in a triggering situation. To do this, familiarize yourself with the “Aggression Ladder”. This will help you understand how your dog is feeling in any given situation.

Depending on the trigger and situation, your dog may start at the bottom of the ladder with yawning, or immediately start in the middle with growling. When you see your dog exhibiting any of these behaviors, remove them from the situation and separately start to work on counter conditioning techniques (e.g. provide your dog with a treat or reward every time they see the thing that triggers their aggression). Over time, counter conditioning can help your dog develop a neutral or even positive association with the thing causing their aggression.

If you are worried about your dog’s aggressive behavior, we recommend consulting a veterinary behaviorist. To find a behaviorist near you, click here.

Frequently asked questions about aggression towards other dogs

Can aggressive behavior towards other dogs be trained out of a dog?

Aggression isn’t something you can “fix”, but it is something you can manage by recognizing the signs and using counter-conditioning techniques to change their feelings about the underlying stressor.

Why is my dog suddenly aggressive towards other dogs on walks?

Aggression on walks can arise if your dog feels as though their social distance zone has been violated. Because your dog is attached to a leash, they may think they need to bark, lunge, etc.  in order to create distance between themself and the other dog. To help reduce your dog’s stress levels, and reduce their aggressive behavior, create distance between your dog and the other dog.