Excellent! They CAN be trained. I had one that would fetch a small ball and bring it back for no more that a scritch behind his ears. And he would then treat me to his name’s sake purr: Evinrude!
We have a black tom that I taught to shake hands.
Really.
I have to most times tap him the back of the leg before he will extend his paw to shake.
Sometimes when he doesn’t want to shake hands, he’ll nip at my hand when I go to tap him on the leg, but will still extend his paw to shake.
When he was young he would retrieve a rolled up ball of paper or something and bring it back to me, but as he grew older he stopped doing that. :)
We also have one that will use the commode.
Cats CAN be trained.
We had a cat my Mom would walk on a leash to the beach and back.
I had a cat I would take bird hunting as a teen and he would retrieve them for me.
But that’s about the extent of any cat training I’ve ever seen:-)