Never heard of alpha chewing the sack off other males, but i shot a lot of squirrels last year usually 5 each weekend and never noticed evidence of such an act. I have a lot of pecan trees in my yard, neighborhood, and the nearby golf coarse. But I do notice around March and June there are alot of squirrel banging going on down here in Texas. I have seen them robbing bird nests eating eggs & baby birds, attacking birds, even a chick. I see the birds attack them and the feral cats catch them like an lion on a gazelle as they eat them on the spot. just my 2 cents