Astro ranks #412 with 301 entries, registered male. The name comes straight from Greek astron (star), and almost every American owner reaches it through the same cultural side door: Astro the Great Dane from The Jetsons (1962-onward), whose mangled-syllable bark turned the name into shorthand for cartoon dog energy.
The Jetsons lineage
Hanna-Barbera gave Astro a specific personality template — eager, slightly clumsy, all heart — and that template still shapes how the name feels on a real dog. Owners picking Astro for a tall, gangly puppy are often quietly nodding to that lineage even if they would not articulate it that way. The name signals warmth more than coolness.
Breed lean and sound fit
Two syllables (ASS-troh), front-stressed, hard T in the middle. Recall cuts through park noise cleanly. The name lands disproportionately on tall, athletic breeds — German Shepherds, Great Danes, Weimaraners, Labradors, and longer-legged mixes. There is a smaller cluster of small dogs and cats wearing it ironically, which works because the cosmic register is roomy enough for both readings.
The space-name moment
Astro sits in a small but visible cluster of space-themed pet names alongside Cosmo, Nova, Orion, and Luna. Owners reaching for these names often share an aesthetic: science-curious, slightly sentimental, comfortable with a name that has reach. The human Astro page shows minimal SSA presence over recent decades, so the pet version essentially owns the cultural space without any human-naming-collision risk.