The orcs love bloodsports, everyone knows that. If you go deep enough into their lands, you will find their favorite entertainment is the Talbar, the arena.
Rich Romans raised fish in private pools at their villas. A favorite fish was lamprey, a parasitic fish which sucks off blood and flesh but made an excellent meal. A particuarly gruesome punishment for slaves was to be thrown into the lamprey pool, where their flesh was ripped from the bone by swarms of the jawless fish.