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Name Biscuit

Boy name

Rex

Rex ranks #76 out of 682 boy cat names in our data (the #1 boy cat name is Charlie). Across all 3 places, 22 cats carry the name. It's also a dog name: #40 among boy dog names.
Rex's popularity trend

Rex's share of cats, year by year — or toggle to its yearly rank. Peak year by share: 2019.

0.02%0.04%0.06%0.08%20122014201620182019
Cats in our data
22
across 3 places
Popularity rank
#76
of 682 boy cat names
5-year rank move
+318
2014 → 2019
Gender split
97% male
3% female97% male

Gender split comes from 31 US shelter cats — the one source in our data that records a cat's sex.

What does Rex mean?
/ɹɛks/1 syllableOrigin: Latin

Rex comes straight from the Latin word rex, meaning “king.” It's been used as a given name and title since antiquity, and it caught on for dogs in particular because of that regal, commanding sound.

Rex has a bold, old-school confidence to it, suiting a pet with real presence, whether that's a barrel-chested guard dog or a cat who clearly runs the household. Short and strong, it's a name that gets said with authority.

Etymology & pronunciation from Wiktionary (CC BY-SA 4.0).

Where Rex shows up

Cats named Rex per place, against that place's total.

PlaceShare
TorontoON, CA0.07%
SeattleWA, US0.05%
DarwinNT, AU0.39%

Rex appears on

Disney Cat Names

Rex means, by theme

Royal & noble