Felis catus · a field guide for the household

The cat is watching you.

Ten thousand years ago a small wildcat started hanging around grain stores in the Fertile Crescent. It never quite agreed to be domesticated. This almanac covers what we do know: the numbers, the breeds, the age math, and what that tail is trying to say.

Move your pointer. Click to get a slow blink back.

By the numbers

A small predator, precisely built

230bones

About 24 more than you. Many are in the spine and tail, which is why they bend like that.

32muscles / ear

Each ear swivels up to 180° on its own, tracking two sounds at once.

25–150Hz

The purr range. It runs on both the in-breath and the out-breath.

12–16h / day

Asleep. Most of the rest is grooming, which takes up to half of waking time.

Breed guide

Nine cats, nine temperaments

Ratings are rough tendencies. Individual cats ignore them freely.

Cat years

How old is your cat, really?

The "multiply by seven" rule is wrong for cats. They grow up fast: a one-year-old cat is roughly 15 in human terms, and a two-year-old is about 24.

After that, each cat year adds about four human years. Indoor cats commonly live 13 to 17 years; the oldest on record, Creme Puff of Austin, Texas, reached 38.

36human years
Prime
Body language

Reading the tail

The tail is the most honest part of a cat. Check it before you reach for a belly.

Upright, hooked tip

Friendly greeting. Often followed by a head bump.

Straight up

Confident and pleased to see you.

Swishing

Focused, irritated, or about to pounce. Give space.

Puffed up

Frightened. The cat is trying to look twice its size.

Tucked low

Anxious or unwell. Worth watching closely.