What kind of Caturdays do you think I have when one of my cats thinks she's a dog. If one is not ever-vigilant one may find themselves pinned down on the couch being licked vigorously.
-Innuendo
Wow. We used to have a cat-dog too. Shadow thought he was a dog. He hung out with the dogs, ate out of the same dish with one of the dogs, chased and played with the dogs, howled with the dogs, and loved to play fetch with humans. Loved the dogs' liver treats, only drank water, and absolutely hated catnip and milk.
Weirdest, coolest, and most fun cat we ever owned. Even the dogs were upset for days after we lost him to complications following surgery when he was only a few months over three.
Genuine 'once in a lifetime' cat, that one.