Arturo is the Spanish and Italian form of Arthur, from uncertain Celtic origins, possibly meaning "bear king." On a pet it occupies the same crossover space as Alejandro: a fully functioning human name from a Latin tradition, warm and formal simultaneously, applied to a dog as a statement of genuine affection.
The Latin Name Tradition
For Spanish and Italian-speaking households, giving a dog a human name from that tradition is natural: Arturo on a dog carries the same warmth as Arturo on a person. Cane Corsos and Spanish Water Dogs carry it with particular cultural coherence.
The King Arthur Layer
The Arthurian mythology connection gives the name a heroic undertow even in Spanish form: the legendary king, the Round Table, Excalibur. That layer works for dogs with some physical presence. The human name crossover is genuine and consistent.
The Counter-Reading: Three Formal Syllables
Arturo is formal enough that daily use will often produce Arte or Arto, workable but less satisfying than the full form. Owners who love the full name should say it deliberately, because the shortening pressure in English-speaking contexts is real. The name rewards the effort.