A question for my animal loving friends

Weather-wise it is awful outside. In the little path through the snow Amby & I have made I've noticed what appears to be cat scat (and I don't mean the jazz kind). This is making me wonder if the animal(s) getting into my garbage are feral cats.
I feel sorry for a fuzz in this weather and would like to put out food for feral cats. I just want to make certain I am not feeding raccoons, those critters are on their own.
Any hints for feeding feral cats and not raccoons?