Juno ranks at #191 with 562 entries, and the name has been on a steady climb since around 2008, when the Diablo Cody-written film with Ellen Page brought the name into mainstream American naming. Pet adoption tracks the same arc, with a slight delay typical of names that need a generation of cultural settling.
The post-2007 Juno effect
The 2007 film gave Juno its first significant American pop-culture visibility outside of mythology classes. The name was barely used before the film and has been climbing on both baby and pet charts since. Compare with Luna, which followed a similar but larger trajectory after the Harry Potter character.
One counter-reading: Juno was the queen of the Roman gods (Greek Hera) long before any film, and a meaningful share of pet owners — particularly those with classics or mythology backgrounds — pick the name for the goddess directly. Those Juno owners tend to overlap with Athena and Luna shortlists, which all share the regal-mythological female register.
Sound and breed fit
The two-syllable shape with open-O ending (JOO-noh) projects exceptionally well outdoors and recalls cleanly across distance. Juno lands across mid-sized to large female dogs at higher rates than for cats, with Huskies, German Shepherds, retrievers, and large mixed breeds carrying the name particularly well. The Juno baby name page shows the human chart, where the name has been on the SSA top-1000 since 2008 and continues a slow climb. Pet adoption is leading the cultural visibility curve, with baby naming following at a slower pace as is typical for film-anchored names.