Will the next expansion be with pets? Some players have found CAS parts inside the game with Sims 4 Studio, the parts have never been used. They found the following: Furbody, Ears, Tail, FurEars, FurTail (According to thesimsvip)
The CAS parts are not officially confirmed, but they do show in the code! Maybe we will see some new furry friends in the game very soon!