One of our cats has an opaque, white surgical graft covering one of her eyes to treat a serious infection she caught from her early life as a stray. She also makes indistinct grumbling noises at us, which become quacks if she's being weird. It's like having a zombie duck in the house, without all the unpleasant walking-corpse stuff and more snuggly.
I don't know what zombie ducks would actually eat. Probably each other, but that's boring. My guess is zombie bread, which would require scientists to create a living bread, so that they could kill it and then find a way to bring it back to life. You know, so I wouldn't have to give up on this dream. Scientists are really nice people.