Plum is a fruit name — deep purple, sweet, slightly tart — and it sits at the unusual intersection of food names and color names. On a female pet, it reads as a cottagecore-adjacent choice with a slightly richer, more eccentric character than common fruit names like Cherry or Peach. It's also a color: deep purple-red, distinctive.
The Fruit-Color Naming Overlap
Plum works as both a food name and a color description, which gives it a flexibility that purely culinary names lack. A dark-coated female dog named Plum is described by her name in two registers simultaneously. Compare Cocoa (brown), Ginger (reddish), Sage (green): food names that double as coat color descriptors.
Literary Connection
Plum appears in English literature as a term of endearment and in P.G. Wodehouse's pen name (P.G. Wodehouse's given name was Pelham Grenville; "Plum" was his family nickname). That Wodehouse connection gives the name a whimsical, English-country-house quality that suits certain owner aesthetics.
The Counter-Reading: Too Quiet to Register
Plum is a gentle, unassertive name that doesn't demand attention. At the dog park, it's unlikely to turn heads the way Pikachu or Killer would. Owners who choose Plum are making a quiet, specific choice — and that restraint is the point. At 40 registrations, it's a deliberate selection by owners who appreciate understatement.