Signs of Aggression in Dogs

Aggression is not desirable in companion dogs. Unfortunately, a dog may develop hostile or threatening tendencies in one or more areas, and if the behavior is not immediately corrected, it may result in a serious problem for the dog's owner and for others. By recognizing the signs of aggression, you may avoid a dangerous situation or prevent an attack.

  1. Other Dogs

    • A common form of aggression in dogs focuses on their response to the presence of other dogs. This aggression can usually be avoided if the dog is socialized with many other dogs as a young puppy, but once it develops, the dog will demonstrate common physical traits to let you know he's upset. Upon spotting another dog, your dog may begin to move stiffly, raising his head slightly and to one side while keeping his focus directly trained on the other dog. In addition, he may puff up his chest and shoulders, making him look bigger. Listen for a low, guttural growl and observe the fur on the nape of your dog's neck, which will stand up. His ears may also flatten back against his head. These movements signal aggression and a possible attack.

    Territorial

    • Dogs are territorial animals, and they may naturally develop protective behavior against people or other animals nearing their home. Unless, you are training a guard dog, it is best to discourage this type of aggression. Often a low, guttural growl is the first indication that your dog is upset by a visitor, followed by aggressive barking and running toward the person or animal.

    Possessive

    • Some dogs develop spatial aggression, triggered by another dog or a human coming too close to their food, their owners or a favorite toy. After an initial growl, the dog may lower its head over its food bowl or another object, warning others to stay away. If a dog interprets the movements of another animal or human as being aggressive toward his owner, he may bite the offender. Food aggression may be diminished by hand feeding your dog, but contact an animal behaviorist for specific techniques.

    Age and Stress

    • Every dog has the potential to bite, but most dogs have a high-endurance threshold before they react. Stress, in any form, increases the risk of a dog biting. The most common indicator of aggression in otherwise complacent dogs is a growl. Older dogs may growl or snap to alert you not to touch a sore area on their body. A dog that cowers in a corner or shies away is warning you not to approach.

    Prevention/Solution

    • Early socializing is essential for raising a happy, well-adjusted dog. Once your dog exhibits aggressive tendencies, contact an animal behaviorist for an analysis and to learn techniques that may reduce aggression in your dog.