Mutt-e-ly, mutt-e-ly dog

For a while Dr. Daddy and I have suspected the heritage of our dog. More specifically, we've suspected the lack of Labrador heritage. The dog doesn't play fetch for hours, doesn't like water, and is a crazy digger- to say nothing of those silly half pricked ears. We saw a picture of her mother (we were told it was her mother), and we were told that most likely her father was a Lab. So I did a little searching.

What do you think?

Perhaps a terrier for her father instead?

Fox Terriers, both Smooth and Wire, are working breeds developed to chase fox into the ground then burrow, dig and bark furiously to annoy the fox out of the ground so the hunter could shoot it. Fox Terriers were bred for stamina that allowed them to run with the fox hounds for hours at a stretch several times per week. This work requires a Fox Terrier to possess intelligence, problem-solving skills, high prey (chase) drive, confidence, fearlessness, and an independent attitude. These characteristics make them excellent hunters and endear them to owners who love a bold, rash and determined companion.

She certainly has enough of those characteristics: LOVES digging, escape artist, likes exploring, independent, likes to chase cats, barks at her prey (cats), intelligent and high energy.
She hasn't actually killed any cats yet and is pretty gentle with Eirena, so maybe her mother had some influence there.
As Eirena puts it: our mutt-e-ly, mutt-e-ly dog.