The Missus nicknamed, "Bunny" long before we ever had rabbits due to her personality resembling that of the Energizer Bunny.
I, myself, am a bit enamored of the Dutch Bunny, Karl, in, I think, the Blockerbuster commercial.
"Bugs" Bunny, by the way, got his name from the artist(Bugs.....?)who originally drew him, as a kind of "doodle," andnot a specific character. His fellow cartoonists, whilecreating a film, would occasionally need another character included ofone sort or another. Frequently, the suggestion would be touse...Bug's bunny. The character caught on and naturally wasnamed, "Bugs bunny."
Buck