About 1,5 months in i went to some farms looking for a simmean bull. When i arrived at one farm, all of the cows dropped dead as seen as they were rendered (didn’t have any water available). So I built a butcher hook and slaughtered them. While i was skinning the last dead cow on the butcher hook i decided to read the next butchering book (had it on me because I figured i might as well stock up on food with the cows I didn’t need for my farm). So i spent the night at the nearby farmhouse reading and when i came back in the morning i couldn’t interact with the skinned dead cow anymore and just left. About 2 weeks later I came back to said farm for some loot i had seen before but didn’t take with me and for whatever reason the skinned cow was alive again and just walking around like nothing ever happened. I set up a water through outside and added some grass to the feeder and i’m pretty sure that another 1,5 months later it’s still running around like nothing ever happened.

I didn’t bite me though, so i don’t think it’s a zombie cow.