What kind of a name is Itty Bitty Doggie?

Well, blame Norma, my Owner's Mother!

You see, she always had Black Labrador Retrievers.
So when she first laid eyes on me (a petite Pomeranian),
she exclaimed,
"OH MY! It's just an Itty Bitty Doggie"

... and so, that's the story, and I'm sticking to it.