Catses are for DOG to chase and bark at, thereby making him tired and satisfied. Otherwise, we would have to run around and act like catses. That would get old.
Dogs do not have the sense of responsibility to puke upon your floors in a timely manner. That's why we have cats. Also, they sometimes allow us to pet them and open doors.
Not Nermal and not Barney. They have to park their furry little bodies on the opposite side. You can just reach enough cat for a light stroke if you don't mind stretching. Sometimes in really cold weather, Barney will lean against a foot - just enough to think he might lay on top of it. He won't.