As with all expansions, the Pets expansion also contains a big variety of new household items. These are mostly in a ranch style to go with the new Appaloosa Plains look and feel. By now your collection of items would have grown to an unmanageable size if you collected all the expansions. But building your house and finding a specific item or decoration is now extremely easy. The Sims 3: Pets now includes the ability to sort items by collection. The default collections are the expansion packs, but if you have your own set of items you like to use for new houses, then you can now create your own collections as well.