In Robert Jordan's "Wheel of Time" series, a creature of the Shadow that is made by breeding humans with livestock. Huge in stature (at LEAST 10' tall) trollocs feed on any animal (including humans) but usually kill just for fun. If a pack of wolves sees a trolloc, the wolves will attack as wolves despise Shadowspawn. Bands of trollocs are typically commanded by one or more myrddraal, as they will only obey out of fear of the commander.
Those two go together like a wolf and a trolloc.