My chickens, goats, and, sheep are randomly disappearing as well I didn't receive any notification warning me they were going to run away they just disappeared. The animals aren't in my Sims Inventor...
Ideas
I have the same issue with chicken. No mods installed
Update: they seem to disappear when they're not in the coop when I leave the lot. When I come back to the lot (after travelling or after saving and leaving the game), all the chicken that we're outside the coop have disappeared
Good catch! I've been having this issue with disappearing chickens too but I'll try to remember this next time in game when I'll be travelling to a different lot.
