Pikachu is the mascot of the Pokémon franchise — the electric mouse Pokémon that has appeared on virtually every piece of Pokémon merchandise since 1996. On a male dog or cat, it's the most direct possible pop culture pet name: no ambiguity, no layered meaning, just the full character name applied to a living animal by an owner who loves Pokémon.
The Pokémon Naming Tradition
Pokémon names appear in pet registries with some regularity: Pikachu, Eevee, Gengar, Mewtwo. Pikachu is the most immediately recognizable because of its mascot status — it's to Pokémon what Mickey is to Disney. The name is also two syllables with a clean Japanese phonetic structure: Pi-ka-chu, three syllables actually, ending on a rising, bright sound.
Owner Type
A dog named Pikachu belongs to an owner who identifies openly as a Pokémon fan — usually a millennial or Gen Z owner who grew up with the franchise and sees no reason to hide the reference. The name works best for small, energetic, or yellow-colored dogs where the visual analogy to the character makes the joke land.
The Counter-Reading: Franchise Dependency
Pikachu's meaning is entirely franchise-dependent. Anyone unfamiliar with Pokémon hears a nonsense word. But the franchise has been globally dominant for nearly 30 years, making this one of the more culturally legible pop culture pet names in current use.