Agnes ranks #836 with 140 female registrations. The name is a Greek-rooted classical feminine (from hagne, "pure") that peaked for human use in the early twentieth century and now appears most reliably on pet licenses as a deliberate vintage choice.
The grandmother-name pet revival
Agnes belongs to the pre-WWII American feminine cohort now resurfacing on dog and cat registries: Betsy, Mabel, Beatrice, Edith. The naming logic is consistent across the cluster: families want the warmth and family-memory register without the human-cohort weight, and the names work better on pets precisely because they have largely left baby registries. The Despicable Me franchise (Agnes the unicorn-loving youngest sister) added a younger-millennial adoption layer that lands particularly on small fluffy dogs.
Sound and breed lean
Two syllables, front-stressed (AG-nes), with a hard G opening and a sibilant tail. The name calls clearly outdoors and tolerates training corrections without sounding harsh. Agnes lands with notable concentration on small terriers, French bulldogs, gray cats, and senior rescue dogs whose owners wanted a name with quiet dignity. See French bulldog names for the cluster.
The counter-reading
The honest concern is that Agnes is a strongly vintage choice with no neutral middle ground. A 2025 puppy named Agnes is making an aesthetic statement, which suits some households perfectly and feels off-key for others. The human Agnes page shows the long human decline that opened the pet space.