Maisy ranks at #579 with 212 entries, registered female. The name is a Scottish-derived diminutive of Margaret (or sometimes Mary), and it has been quietly riding the same vintage-revival wave that brought back Daisy, Poppy, and Lulu on the pet side. The aesthetic is unfussy, slightly British, and reads as a name a small dog would write at the bottom of a postcard.
The British-cottage register
Maisy clusters with Daisy, Poppy, Mabel, and Beatrix in a specific naming pocket that draws on British children's-book aesthetics. The Maisy Mouse picture-book series by Lucy Cousins (running since 1990) is a real anchor for owners who grew up reading it. The cohort skews toward small fluffy breeds and owners who like cottage-aesthetic photography.
Breed lean and sound
Two syllables, front-stressed (MAY-zee), with a soft opening and a buzzing mid-consonant. The name lands disproportionately on Cavaliers, Bichons, Yorkies, Poodle mixes, and small shelter mixes. The recall profile is decent across short distances and lovely at close range; the name is built for a dog small enough to sit on a kitchen counter.
The Maisy-versus-Maisie spelling
Both spellings exist on registries, with Maisy slightly more common in American records and Maisie more common in British ones. The human Maisie page shows the name climbing on the SSA chart through the 2010s, riding the same vintage wave. Pet and human are sharing a moment without crowding.