Sassy

Sassy is an American English informal adjective meaning "lively, bold, and spirited," derived from the earlier slang saucy, meaning "impudent" or "cheeky." As a pet name, Sassy perfectly captures the personality of a companion who is confident, opinionated, and entirely unbothered by what anyone thinks of them. It carries an affectionate admiration for a pet's bold, self-directed attitude.

Sassy is a name that tells you everything you need to know upfront — this companion has opinions, they will share them, and they are unapologetically themselves in the best possible way. It suits cats especially well (though plenty of feisty small dogs wear it with equal pride), particularly those who make it abundantly clear that the household runs on their schedule. Pets named Sassy tend to be independent and entertaining, with a sharp personality that keeps their owners endlessly amused and a little bit awed.