Re: Pets don't appear

@carolina18c  Try evicting the household in Edit Town and placing them back in their house again.  As long as you do this in one Edit Town session, without saving the sims and replacing them, they should keep their jobs and relationships, although they'll lose their promised wishes and opportunities.

If that doesn't work, be sure to quit without saving, and let me know whether the pets' portraits show in-game or not.