Buffy ranks #450 with 271 entries, registered female. The name is a friendly nickname form of Elizabeth (or sometimes Beatrice), but its modern American pet-naming use leans heavily on a single specific cultural anchor: Buffy the Vampire Slayer, the 1997-2003 TV series that turned the name into a Gen-X and Millennial cultural marker.
The Whedon and pre-Whedon layers
Before the show, Buffy was a soft, slightly preppy nickname associated with mid-century white-American naming traditions — think the Buffy-and-Mr.-French setup of Family Affair (1966-1971). The Joss Whedon series rewrote that register entirely, giving the name a tougher, ironic, self-aware contemporary read. Owners reaching for Buffy now are almost always referencing the show, even if loosely.
Sound fit and breed lean
Two syllables (BUFF-ee), front-stressed, with a soft fricative middle that gives the name a friendly recall. The name lands disproportionately on small, fluffy breeds where the cute register matches the sonic shape — Bichons, Pomeranians, Shih Tzus, Yorkies, white Maltese, and small fluffy mixed breeds. The contrast between the show's tough register and the small-fluff fit is part of the charm.
The dated-already counter-reading
Worth flagging: Buffy the Vampire Slayer ended over twenty years ago, and the cultural air around the name has thinned for younger owners. Joss Whedon's reputation has also taken a public hit since the late 2010s. The human Buffy page shows minimal SSA presence — this lives mostly on the pet side.