I can relate...kind of.
My lab, now at five, thinks she is a big cat.
Up until getting the cats last year she never played with toys.
It took almost a year of watching them play before she got the hang of it. She still doesn't play with dog toys...only cat toys. Nothing like seeing an 80lb dog happy as can be because she is chewing a mouse with a bell on it
The cats on the other hand, play with her toys, try to drink out of the toilet and at night you can catch them doing "guard duty" at the front door. They look at the little window next to the door making sure all is safe while the dog sleeps at the foot of the bed (actually on the floor).
We have either role reversal or sharing of responsibility .... I am not sure around here.