Board Thread:Suggestions/@comment-35208486-20180523010845/@comment-26252711-20180524063644

Well, it might take some time to script and put all the emotes into zombies which can delay the game's main development (such as Zombies and Weapons) for something almost kind of useless to be added in the game.

I think it only works on Survivors because they have a certain animation they use (sprinting, jumping, holding weapons, running with weapons, etc) and Zombies use different stuff from the Survivors. If Zombies were to then use emotes, then the fastest way to do it would be replacing the animation of the Normal Zombie with the Survivor one, though it wouldn't be the most effective way.