Frederick on a pet is a very specific choice: a full, formal, three-syllable name placed on an animal with obvious deliberateness. It implies an owner who finds the formality funny, deeply earnest about treating a pet as a full-name-worthy being, or both. The name means peaceful ruler in Germanic — a noble pedigree for a dog who mostly rules the couch.
Generational Pet Aesthetic and Human-Pet Crossover
Frederick belongs to the same category as Reginald, Cornelius, and Bartholomew — the deliberately overqualified human name applied to a pet. The joke lands because the gap between the name's formality and the animal's actual concerns (meals, naps, attention) is inherently comic. The human Frederick has respectable SSA history; on a dog it signals the owner's relationship to their pet is equal parts love and irony.
Nickname Ecosystem
Frederick generates nicknames naturally: Fred, Freddie, Fritz, Rick. Most Frederick-owners settle on Freddie as the working name, which is warm and affectionate, two syllables, easy to call. The full Frederick comes out for formal introductions or when the dog has done something particularly solemn. Basset Hounds and Bulldogs carry the full name with particular gravitas.
The Counter-Reading: Requires Buy-In
Not every guest, veterinary staff member, or dog park acquaintance will find the formal-name-on-a-pet joke equally funny. Some will. Owners who need universal approval for their naming choices should consider Freddie directly — all the warmth, none of the setup.