When you think of it, would you
roll over and give your paw?
I dearly loved my dogs, and they were obedience trained. However, my cats learn also. They understand "no" of course, but they also know that the "love, love, love" (love seat) is the place to go to get tummy rubs and petting, and they understand routines, cause and effect, etc., but I don't teach them tricks.
They learn what they choose. Precious (bridge) taught me to play fetch, Blueberry says "Ma" on command, and Nina says "Ma Ma" on command (especially if she's hungry). They have learned a lot, but picked it up on their own, because it was useful.
I dearly loved my collies and their loving obedience, and I so love my cats with their proud indepencence.
Both are bright, but cats are more opinionated. (as Craig Ferguson says, "Remind you of anybody?"