Carson is an Old English surname meaning "son of the marsh-dwellers" — though most people naming a dog Carson aren't consulting etymology. They're after something that sounds capable and grounded without tipping into the overly formal. Carson achieves that balance cleanly.
Human Name, Dog Name
Carson straddles the human-pet naming line comfortably. The human name Carson has been in steady American use for decades — country enough to feel honest, professional enough to avoid sounding like a costume. On a dog, it reads as the owner opting for full-person status: no nicknames required, no explanation needed.
Breed Fit
Carson suits working-class breeds with intelligence and presence: Border Collies, Australian Shepherds, any breed where the dog seems to be doing something purposeful even at rest. A Cavalier named Carson is a mild mismatch; a ranch dog named Carson makes complete sense.
The Counter-Reading: Generic in Its Category
The surname-name tradition is well-populated territory. Carson competes with Cooper, Carter, Connor, and a dozen other C-name options. The name does the job without standing out — which some owners want and others find unsatisfying once they've met ten other Carsons at the dog park.