Julie ranks at #578 with 212 entries, registered female. The name is a French-derived diminutive of Julia, both rooted in the Roman gens name Julius. On the pet side, Julie reads as a deliberate human-name borrow with a slightly retro 1970s warmth, the kind of name worn by an aunt who taught you to bake.
The boomer-and-Gen-X human-name register
Julie peaked sharply on the SSA chart in the 1970s, which makes it a generationally specific name on the human side. Owners reaching for Julie on a pet are often working with the comedic mismatch between a baby-boomer adult-woman name and a small dog, or quietly memorializing a specific Julie from their family or friend circle.
Breed lean and sound
Two syllables, front-stressed (JOO-lee), with a soft opening and the long-E ending. The name lands on small-to-medium friendly breeds — Poodles, Cocker Spaniels, mixed companions, and the occasional cat. Larger working breeds rarely wear it; the soft register pulls the name toward affection rather than command.
The pop-culture lineage
Pop-culture Julies are scattered: Julie Andrews (a long shadow on the name's image), Julie from The Love Boat, Julie Newmar from the 1960s Batman. The cultural anchors are loose enough that owners bring their own reading. The Julie baby name page shows the name well off its 1970s peak on the SSA chart, which lets pet Julie carry the name's everyday warmth without competition.