We put out table scraps, supplemented with Old Roy, and get all kinds of critters, such as coons, skunks, possums, foxes, (red & grey) and feral cats, and on rare occasion, have seen mixed groupings at the dish. I guess when food is there, they aren't interested in eating each other.
What is interesting, and I have never seen this on any of the animal shows, either, is the way a strange coon will become part of the "group". He will back up to the food dish, slowly, taking stabs and nips from the established families, until he is at the dish, and will then reach around behind him to get a "handful" of food, and eat it, and slowly turn around, still taking nips from the others, until he is fully facing the dish, at which time he is a full-fledged "member" of the group !
I do not allow my inside cats to mingle with the "outside" critters, but one night, while carrying Tico back to her "home", the garage, she ripped clear of my grasp and attacked a red fox at the dish, who puffed up about three times the size of an ordinary fox, and I had to run and grab her before she jumped him. Normally extremely wary, the Red was so occupied with the threat of Tico, he didn't even see me until I grabbed Tico up, taking some punctures myself, but holding on to her.