My cat walks on a leash outside and can sit, liedown and shake paw on command (most of the time).
He will also drag his brush to me when he wants to be groomed. and very rarely will carry his empty bowl to my computer desk and whack my ankles with it to let me know he is hungry.
He also lies on my messed up ankle when it hurts and I can use his warm tummy as a foot rest then. He is a big cat 25lbs and the size of a Cocker Spaniel.
my cat plays fetch all the time
and he can walk on a leash
and he can shake a paw
one time i was at a state park and i saw a man out walking his cat on a leash. me and my girlfriend (a big-time cat lover) were on the ground laughing. i don't know why, i guess we've never seen a cat on a leash. it was just funny looking.
also, my family used to have a black cat with white paws....called him boots. my brother was very young at the time, like between 5 - 8 or something, and loved cats then. boots was the only pet we had then. one day my brother decided to time him to the doorknob in our garage.