So I'm trying something different with my Sims 3 game, I downloaded a custom world but it turned out to be empty, no sims live in it, so I've decided to fill the world up with a bunch of households I'...
No link, just a suggestion: You could open up a new game of Appaloosa Plains, copy some of the households to your library and plop them down in your custom world. Most of them have pets.