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
My ranch family gets all their chickens, goats, cows reaped as soon as I come back to them in a rotational gameplay, with animal aging off, it's been happening ever since I got cottage living(which I got before horse ranch but hits all non-Sim animals), and every time I've moved or returned from off-lot with them, it's incredibly annoying.