Chalk painted dog proof cat feeding station and litter box hide
"Dog Proof" may not be as accurate as "Dog Resistent" or "Dog Challenging", but so far it has worked well in our household. In fact, our dog has given up on raiding the litter pan so I consider it a complete success. We have large retrievers who are much too big to fit through the doors, although small breed dogs could walk into the litter box just like a cat. By altering the size of the door openings, however, this design should accommodate many cats & dogs. Another feature of having a box with a "foyer" is most of the litter on your cat's feet will stay inside the large crate as they exit.
Since this feeder is completely enclosed and requires the correct microchip, RFID tag or collar magnet to gain entry, it's dog proof against any pooch large or small. As long as your cat is willing to enter the box, she'll never have to share her dinner again.