Rhino is another cross-species naming choice — calling a dog after a large, armored, unstoppable African megafauna — and it works purely on physical energy. The rhino is not graceful; it is powerful, dense, and moves with complete indifference to obstacles. A dog named Rhino has either that energy or is named as a loving joke about the opposite.
Bolt (2008) Association
Rhino is also the name of the hamster in Disney's Bolt — a tiny animal with outsized self-confidence who believes he is a superhero. The character's comedic premise (small animal, massive ego) makes Rhino a perfect ironic choice for a small dog. A Chihuahua named Rhino is a Bolt tribute and a behavioral description simultaneously. Chihuahuas and French Bulldogs are the natural ironic fit.
Straightforward Power Naming
For large, powerful breeds, the name is sincere rather than ironic. Rottweilers and American pit bulls — dense, powerful, unstoppable , wear Rhino without contradiction.
The Counter-Reading: One Note
Rhino is a one-dimensional name , it communicates power and not much else. Owners who want a name that reveals personality as the animal ages may find it limiting. Browse strong names at pet names.