Cat Facial Expressions and What They Can Mean

Cats communicate a great deal with their faces. The same features used in the Cat Grimace Scale also respond to mood, comfort, stress, and the environment, which is why they are best read together. The five features come from the published Feline Grimace Scale framework, described by Evangelista et al. (2019).

Ear position

Ears are one of the easiest features to see, but they respond to many things at once. A relaxed cat usually holds its ears forward or slightly outward. Ears that rotate outward, sit lower, or flatten can signal fear, irritation, or pain. Ears also move to track sounds, so one flattened ear may mean the cat is listening to something behind it.

In the Cat Grimace Scale, ear position is judged against three reference states: forward and relaxed, slightly separated or rotated, and flattened or clearly rotated outward. The comparison is useful because it separates a brief ear movement from a more settled change.

Orbital tightening

Orbital tightening refers to how narrowed the eyes look. An alert, comfortable cat tends to have open eyes with a rounded shape. Narrowed, partially closed, or squinted eyes can accompany pain, but they also accompany bright light, sleepiness, and slow blinking during contentment.

Context is essential. A cat squinting in a sunny window is not showing the same thing as a cat squinting in a dim, calm room. The scale asks the observer to judge only the eye opening and to compare it with reference images rather than interpreting the cat's mood.

Muzzle tension

The muzzle is the area around the mouth and whisker pads. A relaxed muzzle looks full and gently rounded. When a cat is tense or uncomfortable, the muzzle can appear flatter, more oval, or more drawn. This is a subtle feature, especially on long-haired cats where the outline is harder to see.

Because the change is often small, the scale encourages a direct comparison with reference images. If the muzzle is too difficult to see in a photograph, the feature can be marked as not visible rather than scored.

Whisker position

Whiskers shift with attention and arousal. Relaxed whiskers tend to curve outward to the sides. When a cat is alert, tense, or uncomfortable, the whiskers can straighten and point more directly forward. Whisker shape also varies naturally between cats, so this feature should always be compared with the rest of the face.

A front-facing photo with good light makes whisker position easiest to judge. A dark or angled photo can make the whiskers difficult to distinguish from fur or shadow.

Head position

Head position is read relative to the shoulder line. A cat that feels comfortable often holds its head above the shoulders. A lowered head can accompany pain, nausea, or withdrawal, but it can also mean the cat is resting or looking at something low. Because posture has so many causes, head position is treated as a supporting observation rather than a standalone sign.

Normal expression versus a changed expression

Every cat has a slightly different baseline face. Some cats naturally have flatter muzzles, larger eyes, or ears that sit a little lower. A single photograph cannot always distinguish a cat's normal face from a changed one. The most useful comparison is the same cat over time, in the same setting and lighting.

This is one reason the Cat Grimace Scale encourages owners to combine the five features and to treat the result as a prompt for further observation rather than a final answer. For more detail on scoring, read how to interpret Cat Grimace Scale scores.

Why one feature is not enough

No single facial feature reliably indicates pain. Flattened ears can mean fear. Narrowed eyes can mean bright light or sleep. A lowered head can mean the cat is watching something on the floor. The value of the scale comes from looking at all five features together and noticing when several of them change in a consistent direction.

A change in one feature is still worth noting, especially when it is unusual for the individual cat. But it should lead to more observation and, if needed, a conversation with a veterinarian rather than an immediate conclusion.

How the tool helps

The website tool turns these observations into a simple workflow. It shows the reference images beside your photo, moves through the five features one at a time, and lets you skip anything you cannot see. You can start an assessment or read what the Cat Grimace Scale is for the background.

Sources and further reading

• Feline Grimace Scale official website — felinegrimacescale.com
• Evangelista MC, et al. Facial expressions of pain in cats: the development and validation of a Feline Grimace Scale. Scientific Reports. 2019. DOI 10.1038/s41598-019-55693-8