I don’t know what Nibbler is (aside from ‘named after a Futurama character) but she certainly is scruff-a-licious!
Brainstorming here, but… maybe there’s some Petit Basset Griffon Vendéen in there?
She certainly has a penetrating stare.
Nose shot! Yay.
Big yawn. It’s tiring being that cute all the time.