This is an open bug that was archived. I am not sure if a new bug report is meant to be made.
Animal aging is turned off in options. Aging is turned off for all sims.
I have a save file I have p...
Ideas
I just tried LMS: RBF - Disable Cottage Living Aging Fix, I still got the message that my cow only has a few more days left. :(
The LittleMsSam mod RBF - Disable Cottage Living Aging Fix only works on animals that appear in game after the mod is installed. Animals that are already in game will still age and die. New ones should not.
The mod does not allow for chicks growing into roosters or hens either so purchase only adults.
The mod also prevents mini sheep and goats from the Horse Ranch pack from dying as well.