Cat body language, explained
Cats communicate mainly through tail position, ear position, and overall posture. Cat body language tends to be subtler than dog body language, so small changes — a flick of the tail, a shift in ear angle — carry real meaning.
Tail
Upright, slight curl at the tip
Confident and content — often used to greet familiar people.
Slow swish
Focused attention, often while watching something.
Rapid flicking or lashing
Agitation — a sign to give some space.
Puffed up
Fear or high arousal — your cat feels threatened.
Ears
Ears facing forward in a neutral position generally mean your cat is comfortable. Ears rotated sideways ("airplane ears") suggest nervousness or uncertainty, while ears pinned flat back usually signal fear or defensive aggression.
Posture
A cat lying on their side or back with legs relaxed is generally trusting — though an exposed belly isn't always an invitation to touch it. A crouched, tense body, flattened ears, and a tucked tail together suggest anxiety, while an arched back with raised fur signals fear or defensive aggression.
Sudden hiding, new aggression, or a persistent change in typical posture can sometimes reflect pain or illness rather than a purely behavioral issue — it's worth mentioning to your veterinarian if the change is new or ongoing.
Want help reading your own cat's signals?
PiGenTek Pet AI looks at your cat's actual posture in the photo or video you share — not just general body language rules.
Ask PiGenTek Pet AI about your pet