Introduction:
Learn about the Canine Ladder of Aggression, a vital tool that helps dog owners and trainers understand how dogs communicate discomfort and stress. Recognising early signs can prevent negative interactions and ensure the safety of both dogs and people.
Download The Factsheet
Section 1: What is the Canine Ladder of Aggression?
The canine ladder of aggression, developed by veterinary behaviourist Dr Kendal Shepherd, is a guide to the signals dogs may show when they feel uncomfortable or threatened. It helps us recognise communication before a situation becomes more serious.
Dogs do not always show every signal or follow the same order. Changes can happen quickly. Consider the situation and the whole dog rather than judging one behaviour in isolation.
Section 2: Signs at Each Step of the Ladder
- Lower Rungs: These include subtle signs of discomfort such as yawning, turning the head away, and lip licking.
- Middle Rungs: More evident signs like growling, showing teeth, or a stiff body posture indicate increasing discomfort.
- Upper Rungs: Critical signs include snapping and biting. Treat either as a serious safety concern and create distance without confronting the dog.
Section 3: How to Respond to Signs of Aggression
If your dog shows signs of discomfort, calmly stop the interaction and give them space. Allow them to move away, and keep children and other animals at a safe distance. Avoid cornering the dog or forcing further contact.
Do not punish a growl. It is useful warning information. Focus on making the situation safer and understanding what is troubling your dog.
If your dog has snapped or bitten, or you are concerned about handling them safely, contact your vet and a qualified behaviour professional for an individual assessment.
Conclusion: Listening to your dog’s early signals gives you a chance to help before discomfort escalates. Respect their need for space. If you need help interpreting your dog’s behaviour, our in-home behaviour consultations can help you plan the next steps.
Related reading
Our signs of stress factsheet helps you recognise changes in your dog’s behaviour. The trigger stacking guide explains how several difficult experiences can add up. For dogs who react around other dogs or everyday situations, see our reactive-dog guide.
Further reading: Dr Kendal Shepherd’s explanation of the ladder and PDSA’s guide to canine communication.
The cover photograph is illustrative and does not show a diagnosed condition or establish the dog’s emotional state.
Justin Jordan is a dog behaviourist and the founder of Jordan Dog Training, a family-owned Brisbane business. With more than 35 years of experience in the pet industry, Justin and his team help families with puppy training, everyday manners and behaviour concerns.
