Ondore Posted:

http://en.wikipedia.org/wiki/Jackal

jackal seems good to me, especially the “These territories are defended by vigorously chasing intruding rivals and marking landmarks around the territory with urine and feces.” part Log in to see images!

seems weak to me:

wiki Posted:

Jackals may occasionally bumemble in small packs, for example to scavenge a carcbum, but normally hunt alone or as a pair.

Not much of a pack of killers.