Halflife headcrabs were little jump-scare masters in that damn game, still gives me laugh-chills. Some kind of small enemy like that would be an effective addition, especially to POI crawls. Never felt bad blasting those little fuggers out the way, but I always felt bad shooting those little sonic alien dog things, they whined and made sad noises, anyway that's HL. Right now in 7DTD the only animal I never ever kill is the rabbit, because I had one that looked just like it irl, and I imagine they're a pain to hit anyway, like that dang chicken. Anyway most of the animals are pretty short, but we only have zombie bears and dogs now, even more zombified versions of other animals would be a decent addition. I would shoot a zombie rabbit... of course it has to be solid white and have red eyes. You know why. Do it.