Dandy occupies a charming corner of the English language: it means "just fine" in the genial mid-century expression ("that's just dandy"), and it also refers to a person of exquisite dress and manner — a fop, a peacock, someone who takes their appearance very seriously. On a pet, both readings are available and both are flattering in their own way.
The Aesthetic Register
Dandy as a reference to dandyism — the 18th and 19th-century European tradition of extreme sartorial refinement associated with Beau Brummell — gives the name a slightly theatrical, ornamental quality. It suits dogs with elaborate coats or distinctive markings: Poodles with show cuts, Afghan Hounds with their flowing silk coats, or Bichons with their powder-puff styling. The pet that has strong opinions about its grooming is a natural Dandy.
The Genial Vintage Reading
"That's dandy" — the cheerful mid-century expression of mild satisfaction , gives the name a warmth and optimism that the sartorial dandyism reading lacks. A dog named Dandy who is simply happy, enthusiastic, and easy to please carries this reading perfectly. The name has a slight gender-neutral quality that makes it equally viable for male and female pets.
The Counter-Reading: Period Associations
Both readings of Dandy are slightly anachronistic , the word doesn't live actively in contemporary speech. That vintage quality is part of the name's appeal for some owners, but others may find it too quaint. The neutral stance is that Dandy is simply a lovely-sounding pet name with more etymology than it initially appears to have.