Uhm... there is a game that has that feature... it's called black... (wink, wink)
You know?... where you boss a big old pet about, and teach it to kill anything that's not yours... and burn the occasional villager... And to camp the kindergarten, and throw with all the little girls cus it sounds funny when they're used as screaming skipping stones...
And kill all animals with Mega Blasts, leaving the map a cratored wreck, and torture the enemies pet, leaving it weak, but not dead... and use fire constantly on the enemy's houses, to keep him bussy, and then drain his mana, and killing his towns people, and generally kill anyone who's happy, Oh! and DEFINATELY eat that DAMN creature handler... she was a pain! And to stalk fisher men, cus when they're THAT close to the water, they're ASKING to be skipped! And use boulders for villager house bowling... And, and... And did I mention killing everything that wasn't yours?...
Or was it only me who trained my pet to do that?...
(who said sadistic?... that's perfectly normal behaviour... innit?)
Tm