Aaron on a pet license is almost certainly a data artifact. It's one of the most common American men's names, and at rank 2131 with only 45 registry appearances, this is paperwork spilling over: households listing a pet under the wrong field, or a dog genuinely named Aaron by owners who wanted a name that sounded like a person, not a pet.
The Human-Name-on-a-Dog Bracket
Some owners deliberately choose names that pass as human names in conversation — Aaron, Kevin, Gerald — as a dry humor move. If that's the intent, Aaron works. It's familiar, three syllables collapse to one call ("Aar!"), and Golden Retrievers and Labs carry the wholesome, approachable personality the name suggests.
Human Counterpart
The human name Aaron has been a steady US top-100 staple for decades. Pet Aarons are simply borrowing that stability. Browse all pet names if you want something less likely to confuse your vet's intake forms.
Counter-Reading: Registry Artifact Warning
If you're researching this name for naming inspiration rather than form-filling, note that most of these 45 registrations probably weren't intentional pet-naming decisions. There are far more distinctive options if you want a human-register name for a dog.