In the Talking Dead, they pointed out reasons why Lizzy (the weird girl) was not the one feeding the walkers rats. One of the main reasons that stood out to me was that the person was eye level with the walkers, Lizzy would not be eye level with them unless she drug a step ladder down there with her. I love watching Talking Dead (except that awful one with Marilyn Manson) cause they tell me all sorts of things I never thought of. I thought it was her, too, before that.
Herschel dying was so sad. So glad the Governor finally got it though. I am so excited to see where they all end up. I am betting at least some of them find Carol though. Also, I think Judith is alive, too.