In this article
  1. Start by describing the movement
  2. What a food-reward experiment found
  3. Human expressions are an unreliable template
  4. What fireworks videos add to the picture
  5. Learn your dog's features and notice physical changes
  6. Use the clues to improve the interaction

A raised brow, a backward ear, a tongue that briefly appears: your dog's face offers plenty to notice. The harder part is deciding how much meaning one movement can carry. A good observation leaves room for the rest of the dog and the moment around them.

Dogs Trust recommends considering the individual, the whole body and the context. Coat, ear shape and other physical features can affect how easily movements are seen. A similar movement can appear in different situations1.

Start by describing the movement

DogFACS is an observational system based on canine facial anatomy and adapted from human facial-action coding. It lets researchers identify and record visible movements. Its official overview explicitly distinguishes that task from inferring an underlying emotion2.

The system also has a manual and certification process. Training involves learning to code movements consistently against examples. The existence of a code for a movement does not make that movement a complete emotional expression, or turn an informal glance at a photograph into equivalent analysis2.

Agreement about a movement and agreement about its meaning are different questions. Coders can be checked against examples for whether they identify the same action. The emotional interpretation still needs evidence about the situation in which the action occurred2.

For everyday notes, the useful habit is to separate what you saw from what you think it meant. “The ears moved backwards as I reached” preserves an event. “He resented it” adds an explanation you would still need to assess.

Give the observation room
Instead ofDescribe
Looking offendedEars moved backwards when the interaction changed
Smiling for the cameraMouth was open in the selected photograph
Giving a worried lookWhat the eyes, ears and body did together
Always makes that faceThe particular activity happening at the time

Those are original examples of descriptive wording. They do not require you to recognise a research code or to settle on an emotion before making an interaction easier for your dog.

What a food-reward experiment found

Researchers tested 29 Labradors in a food-reward task, comparing anticipated access with blocked access. A certified DogFACS coder assessed short samples while blind to condition3.

Ear bases moving closer together were more common during anticipation. Ears moving backwards, lip parting, jaw dropping and nose licking were more common during blocked access. A reported blink difference did not meet the threshold after correction for multiple comparisons3.

The study used one breed and one context, without a baseline measure for every dog. Emotional states were inferred from the situations3.

These are differences between the tested conditions, rather than proof that a single nose lick reliably identifies frustration elsewhere3.

Human expressions are an unreliable template

A separate analysis used selected online videos of 100 dogs and 50 people across five contexts, including relaxation. Researchers coded visible facial actions and compared the patterns. Emotional categories were assigned from the apparent trigger and behavioural context4.

Dogs and people largely used different facial actions in comparable situations. The study did not find distinctive frustration-related actions in dogs compared with relaxation, and its authors discussed possible context dependence. Failure to identify a distinctive pattern is not proof that an emotion is absent4.

Nose licking illustrates the need for care: it accompanied positive anticipation in the video analysis, while being more common during blocked food access in the Labrador experiment. Context and the comparison being made can change the pattern3, 4.

The selected videos were not a controlled exposure to identical stimuli across species. The authors also stressed that emotional expression involves more than the face, including posture, sound and other signals4.

A face can still be expressive without behaving like a human portrait. You can enjoy a familiar look while keeping the descriptive question open: what changed, what else was happening and what did your dog do next?

What fireworks videos add to the picture

A study compared home videos of 36 dogs during fireworks with videos taken on another evening. Owners had reported at least some welfare impact from fireworks, so this was a selected group rather than a general sample of all dogs5.

Backward ear position showed the largest effect among the coded measures. Movement and panting also increased. Lip licking and yawning did not differ significantly; apparent increases in blinking, hiding and vocalisation did not remain significant after correction for multiple testing5.

The study supports close observation of ear position while preserving individual and contextual limits. It does not establish that every backward ear means fear, or that the absence of yawning or lip licking means a dog is comfortable5.

That is a useful reason to resist a single-feature checklist. A photograph can leave you without the sound, the preceding minutes or the dog's movement between places. A confident caption cannot restore information that was never captured.

Learn your dog's features and notice physical changes

Dogs Trust explains that floppy ears can make movement less obvious, while coat colour and long fur can hide smaller changes. It advises watching combinations of signals and considering what is happening around the dog1.

The practical comparison is with the individual in front of you. You do not need to make their face resemble a diagram of another breed. Describe the features you can actually see, and acknowledge where the view is limited.

Physical eye changes require a different response. PDSA advises contacting your vet as soon as you notice an eye problem. Signs include redness, discharge, cloudiness, frequent blinking, keeping an eye closed, a bulging eye or a change in pupil shape6.

The distinction is practical. A photograph of a glance cannot assess the health of the eye, and PDSA warns that delaying treatment can risk sight. Tell the practice about the physical change rather than waiting for an emotional explanation6.

Use the clues to improve the interaction

The RSPCA recommends reward-based training, access to a safe retreat and avoiding shouting or punishment. It advises contacting your vet about behaviour changes or regular signs of stress or fear, with behaviour referral where appropriate7.

Its everyday guidance also includes safe toys and opportunities for exercise and play, adjusted to veterinary advice where needed. It recommends consistency in how the household responds. Those arrangements support ordinary daily care alongside learning what your dog's signals might mean7.

A useful everyday account

  • What happened immediately before the facial movement
  • What the whole body was doing at the same time
  • Whether the dog approached, stayed in place or moved away
  • What changed when the interaction ended
  • Whether this is new or part of a familiar pattern

These prompts help organise observations; they are not instructions to repeat an uncomfortable interaction for a clearer picture. A brief, incomplete account is still more useful than a precise-sounding emotional label attached to an isolated frame.

Dogs Trust advises stopping what you are doing and giving space when a dog appears anxious or stressed, including asking others not to approach1. You can offer that pause while remaining uncertain about the exact feeling.

The aim is not to replace ordinary attention with a catalogue of facial codes. Notice the face, widen the view and respond to the dog who is there. Research makes that observation more thoughtful when its limits stay alongside its findings.

Sources and further reading7 sources

The small numbers in the article link to the source behind each fact. Sources open on their own websites.

  1. How to understand your dog's body languageDogs Trust
  2. DogFACSAnimalFACS
  3. Differences in facial expressions during positive anticipation and frustration in dogs awaiting a rewardScientific Reports
  4. Dogs and humans respond to emotionally competent stimuli by producing different facial actionsScientific Reports
  5. Fear expressions of dogs during New Year fireworks: a video analysisScientific Reports
  6. Eye problems in dogs - an overviewPDSA
  7. How to help your dog behave wellRSPCA