Pico appears 82 times at rank 1334, nearly entirely on male pets. It's a compact, punchy name with several plausible origins — and any of them produce a good pet name. At this tier, Pico likely reflects a mix of Los Angeles geography, Spanish-language culture, and parents who love a short, decisive name.
Geography, Language, and Sound
Pico Boulevard runs through Los Angeles, and Pico-Union is one of the city's most distinct Latino neighborhoods. The name is also Spanish for peak or summit, carrying a quiet elevation metaphor that works on a confident, alert dog. And in physics, pico- is a prefix meaning one trillionth — which gives it an ironic-cute dimension for science-adjacent owners naming a very small dog. Chihuahuas and small terrier mixes dominate at this level.
Sound Fit
PEE-ko is sharp, two syllables, and opens with a voiceless consonant followed by a clean vowel. It sits in the same sonic family as Rico, Chico, and Coco — names that are phonetically crisp, culturally warm, and easy to call. It shortens to P in practice, which isn't ideal, but few owners need to shorten a two-syllable name anyway.
The Counter-Reading
Pico is specific enough that it will occasionally require context — people unfamiliar with Spanish or LA geography may not have an immediate association. That's a minor issue for most owners. The name's main limitation is that it encodes small-dog energy very strongly; on a large breed it reads as ironic rather than straightforward.