Peggy is a mid-century nickname that skipped the vintage revival entirely, which makes it feel fresh on a pet in a way it no longer feels on a person. Warm, unpretentious, with a faint Golden Age of Television energy — it suits female dogs and cats who have nothing to prove.
The Nickname-Only Register
Peggy is a nickname for Margaret or Margaret-derived names, through a medieval English rhyming pattern (Meg became Peg, Peg became Peggy). It was a mainstream first name through the mid-20th century and then mostly vanished from birth certificates. On a pet, the name recaptures some of that warmth without any of the mustiness. It sits alongside Becky and Betty as names the vintage revival hasn't quite reached yet.
Pop-Culture Associations
Peggy Bundy from Married with Children is the strongest cultural anchor, giving the name a slightly irreverent edge. There's also Peggy from Mad Men — capable, overlooked, eventually triumphant. Either association works well on a female dog with character. The human name Peggy traces back through Margaret to the Greek Margarites, meaning "pearl."
Breed Fit
Peggy works across breeds but has a particular affinity for terriers and small dogs with outsized personalities — animals that carry themselves with more confidence than their size warrants. For something in the same retro-nickname lane but slightly more neutral, Gracie is worth comparing. Browse all pet names for more options.