Tosca is a Puccini opera — full-throttle, beautiful, and ending badly — and as a pet name it carries exactly that combination of drama and elegance. It's a name for owners who want something that sounds like a person but isn't any specific person, with an Italian musicality that works on cats especially well.
Opera as Pet Name Source
Opera names occupy a specific corner of the aspirational pet naming market: they're educated, slightly theatrical, and signal cultural interests without requiring explanation to every person you meet. Tosca sits alongside Figaro, Mimi, and Violetta in this register. Maine Coons and Siamese cats carry operatic names with the gravitas the genre requires.
The Italian Sound Advantage
TOSS-kah ends in an open vowel, giving it natural friendliness as a call name, and the consonant cluster in the middle creates a satisfying sound when said at full volume. Italian place and cultural names — Roma, Capri, Siena — have been popular in pet naming for phonetic reasons, and Tosca benefits from all of it while adding the operatic layer on top.
Counter-Reading: Plot Awareness
Anyone who knows the opera knows Tosca ends poorly for everyone involved. Whether that adds dark humor or mild unease depends on the owner's relationship to Puccini. For owners who don't know the plot, the name delivers pure Italian elegance with no asterisk. Either way, it's a name that holds up under scrutiny, which is more than most pet names can claim.