[HR] [CoL] Sheep, Goats, And Chickens Disappear randomly

I hadn't played this save since December last year. Everything was all good when I left. But today when I loaded in my blue sheep was gone. After my Sims attended the Romance festival and came home, my pink sheep and my goat had vanished. They're weren't in my Sims relationship panel, or their inventories, or the household inventory. They'd just vanished without a trace. I left without saving and reloaded and my pink sheep and my goat were back, but my blue sheep was still missing. The animals are a big part of this save and I can't play it if they're going to randomly disappear like that. 😢