About 120 yards away a freshly killed chuck was being inspected by another chuck. Suddenly the one doing the inspecting started feasting on the dead one,

I filleted the one doing the eating with my Contender Super 14 in .223 while feeling like this was an anomaly of some sort, the result of in-breeding of the worst kind and I was doing the rock chuck world a favor. A little later in an adjacent rock pile we saw the same thing happening again with one chuck tearing away at another dead "tenderized" chuck.
Did we happen upon some sort of cannibal tribe of chucks or have any of you seen this strange behavior before?

Scott