Fisher is a strong occupational surname name that works naturally on dogs — it has the same register as Hunter, Porter, and Cooper, which all rank much higher in pet registries. The fact that Fisher sits at rank 2438 probably reflects how recently it crossed from the human surname pool into active pet-naming use rather than any limitation of the name itself.
The Occupational Surname Category
Occupational surnames have been a durable pet naming category for decades. Fisher slots into the outdoorsy, active end of that group — alongside Hunter and Scout. It signals an owner who probably spends time near water and values names with a working-heritage feel. Labrador Retrievers, with their history as fishing boat dogs, get Fisher with pleasing logic.
Human Crossover Appeal
Fisher is a legitimate given name in the US, with modest use documented in SSA records. That human-name viability means Fisher as a baby name and Fisher as a pet name occupy overlapping territory — owners who love surname-style names for both children and pets tend to appreciate this flexibility.
Counter-Reading: The Animal Fisher
There is also a Fisher cat (actually a mustelid, not a cat) — a North American forest animal. Some pet owners may not realize the animal association exists, while others may find it an extra layer of charm, especially for cats. Worth knowing before you commit the name to official paperwork if the secondary reference matters to you.