You reach to stroke your dog. They turn their head, lick their lips and become still. It is tempting to try again because nothing dramatic has happened. Yet stopping now may be the most useful response.
Bites can appear sudden when the earlier changes were brief or easy to miss. These five observations are not a universal ladder: dogs do not all show the same signals, in the same order, before biting. Read the whole body, the situation and the individual dog’s normal behavior.
1. Turning the head or body away
If a dog turns away from an approaching hand, shifts their body or leaves, pause the contact. Do not follow and grab them. Withdrawal can be a request for distance, even when it looks minor to a person.
What to do: withdraw your hand and leave room to move away. If the dog does not return, respect that choice. Coming near you does not automatically mean wanting a hug.
2. Brief lip licking with other signs of tension
Lip licking can occur around food and in many ordinary situations. It becomes more useful information when it appears as someone approaches, together with ears moving back, looking away or a change in posture.
What to do: pause the interaction. If the dog remains loose and voluntarily asks for more contact, keep it brief. Do not turn the pause into a test of how much discomfort the dog will tolerate.
3. Suddenly becoming still
A dog who was moving freely may freeze, close their mouth and fix their gaze. Stillness is not necessarily calmness or acceptance. Be particularly careful around sleeping dogs, valued objects and potentially painful areas of the body.
What to do: stop reaching, moving the dog or taking the object. Avoid grabbing the collar. Allow a safe exit rather than leaning closer to inspect the expression.
4. Looking sideways while keeping an eye on you
A dog may turn their head while continuing to watch a hand or person, sometimes showing a crescent of the white of the eye. This is often called whale eye, but eye shape and gaze direction also affect what is visible.
What to do: consider accompanying stiffness and the context. Turn slightly sideways and increase distance instead of staring or approaching head-on.
5. Growling, showing teeth or snapping
These are reasons to stop the interaction and prioritize separation. Punishing a growl may suppress a warning without making the dog more comfortable. Do not push the dog away by hand, pry an object from their mouth or challenge the warning.
What to do: move children and visitors away calmly. Use doors or barriers when it is safe to do so, without cornering the dog.
A simple record after everyone is safe
- Who approached, and from which direction?
- Was the dog resting, eating or holding something?
- What changed first: movement, mouth, eyes or posture?
- What distance or action helped the dog recover?
Do not recreate the incident for a better recording. A bite injury, repeated escalation, vulnerable household members or a sudden change in handling tolerance warrants professional support. Arrange veterinary assessment for possible pain or illness and work with a qualified reward-based behavior professional. Seek appropriate medical care for a person who has been bitten.
This is a safety-oriented English adaptation of Saramgom’s Korean article, not a diagnostic test. Related background: VCA on fear and aggression and AVSAB position statements on humane training.