Species: More specious than species
Genus: Smart but no genus
Family: He better not bring home a family
Order: Seldom takes orders
Class: Not much
Phylum: When his nails need it
Kingdom: He thinks he's king of the couch
Domain: Anywhere he sleeps
Life: Only at meal time
Sorry, you asked about the First Dog!
Breeds of dogs would only exist when there were different varieties to mate and reproduce. Therefore I would opine the First Dog would not be termed a “breed”.
I get a slow when the electrodes are put away for the night.