I apologise; I forgot to include you in this earlier reply:
“I have met many dachshunds with guilty looks, especially if they have just finished eating either out of a cat food dish or a cat box. Or both. They like both.
Dachshunds are extremely intelligent and extremely “self-directed”, code-words for “challenging” to train. But if I have rats or voles, shrews or moles, they’re the dog I want to go down the hole or burrow after them. That’s why they’ve been bred for hundreds of years; they do not need to be trained to do this; it is what they do.”
Our mini doxie absolutely loves to hunt mice. If he’s allowed in our outbuildings, he runs in, finds a mouse, snaps it’s neck, drops it, then repeats. We won’t let him dig, though. Surprisingly, he “allowed” my husband to train him not to dig. (Just like he “allows” us to pretend we’re the boss.)