That is a new character called Michonne. From what I understand her zombie pets are her old boyfriend and his best friend. She hacked their arms and jaws off so that they can’t attack her. Apparently she uses them to kind of camouflage herself from the other zombies.
That’s creepy.
I don’t know how any of the living can work up an apetite after all the gore.
Yeah, it’s pretty gross. I am learning all this stuff from the IMDB Walking Dead forum. There are a lot of people who read the comic posting there and they know all the trivia.