Did they eat that horse during the first season that Rick was on when he first ran into Glen in the city? I can't remember if they actually ate it or just attacked it to get to Rick.
Oh, they definitely ate it. I vividly remember a very squicky shot of them pulling the intestines/other entrails out of the horse. There was also a scene last season (back when the group was camped out near the woods) where they stumbled upon a lone zombie chowing down on a deer in the woods.