Harper ranks #251 with 445 entries and is a thoroughly modern unisex human name that crossed over to pets in the same wave that lifted it on the SSA chart. Harper held a top-10 SSA female position through much of the 2010s, which makes pet Harpers part of the strongest current human-pet naming convergence.
The surname-pivot register
Harper originally was an English occupational surname for a harp player, and like Mason and Cooper, the name pivoted from surname to first name across the twentieth century. The pivot accelerated dramatically in the 2000s and 2010s with celebrity baby Harpers (David and Victoria Beckham's daughter Harper Seven, born 2011) reinforcing the trend. Pet Harpers carry that surname-pivot register, and the name reads as confidently modern.
One counter-reading: Harper Lee's To Kill a Mockingbird (1960) gives the name a literary anchor that older owners may hear. The literary reading is unisex; the SSA-chart reading is now strongly female. Pet Harpers split this way too — most are female, but male Harpers exist and read as slightly more literary or surname-leaning.
Breed fit and sound
Two syllables (HAR-pur), front-stressed, with a soft H-opener and the rolling R-finish. Recall is moderate; the soft H limits punch but the closed P-R mid-section helps. The name lands across breeds with a slight lean toward modern family dogs — golden retrievers, Labradoodles, Bernedoodles.
Crossover
The human Harper page shows the SSA top-tier presence. Owners cross-shopping modern unisex pet names often consider Charlie and Bailey. Gender skew is heavily female despite the unisex history, and the name pairs especially well with modern family dogs in households where the human-name register matters more than pet-traditional naming.