[CD] [HR] Disappearances of Pets and Horses in Premade Households
When starting a new game with update 1.117.227.1030 (PC) and visiting the worlds of Chestnut Ridge and Brindleton Bay, all households with pets or horses will lose their animals — only Sims will remain. Mayor Whiskers and Captain Whitaker will also disappear.
On the Manage Households screen, images of the missing animals will remain for a while. However, if you go to Chestnut Ridge or Brindleton Bay and hover over their house, the animals will disappear.
However, if you load a family with animals from the gallery, save the game, and then reload it, the animals will remain in the household. I tested this with the Life is Golden family their dog Lulu remained in place.
Beforehand, I deleted the Sims 4 folder from Documents, repaired the game through the EA app, and started a new game.