What would it even matter if they replaced slow moving animals to the slow moving humans? It literally adds nothing to the show and I'd stop watching if they did something as stupid as that. That was one of the reasons that made the movie Zombie Apocalypse go from cheesy and barely watchable to almost entirely unwatchable was making stupid zombie dogs and tigers.How about add Zombie animals?? i mean if the virus that turns people is air borne. why hasnt it changed animals as well?? go deal with a pack of zombie wolfs / wild dogs. Dingo ate your baby...Rick.
I think the thing I'm getting tired of is how easy they have it in the show. I want them to run out of food and have to scavenge for it. I want Rick to walk around for a season with only 3 rounds in his python and him having to be extremely careful what he uses them on. To find a single bullet in a house with a calibre they may not even need meaning Christmas to them. Stuff like that. So far everything is convinient for them. Hell, in the walking dead game everyone in your group is slowly starving to death and you have to decide who gets the food that day and there's not enough for everyone.