I love your pictures. Watching my cat and Lightning play is my favorite pastime, but I can never get photos. The game usually starts with Lightning chasing Mr. Kitty, but then the cat turns the tables and takes off after Lightning and, after a couple of circuits around the couch, leaping on him. Mr. Kitty weighs 10 lbs and Lightning weighs 60, and usually the game ends with Lightning running out the dog door to get away. They really go at it! But they never try to hurt each other. I bet Fred and your kitty will be best buds too.
Our basset Tulip loves to play with the cat, too! It was her first playmate when she came home to us as a puppy because they were about the same size and our older dog wanted nothing to do with her.
Jacob (the cat) loves to get Tulip in trouble by knocking items of high shelves and tables she can't reach. Then, because Tulip can't let something so delectable sit on the ground without chewing on it, she MUST destroy it and get reprimanded. Jacob just sits back and enjoys the show: naughty kitty.
They also ALL hang out in the back yard together like a happy little dog pack. (Even thought hey are a basset, a 15 lb rat dog mutt, and a big black cat.)