Cat
Cats are pets that can be bought or sold in most Sims games. They are one of the most common pets Sims can own. In some games, such as the GBA Sims games, they are not something Sims need or have to take care of much, aside from petting them and and cleaning up their messes. They are mostly for show.
In other games, like The Sims: Unleashed and The Sims 2: Pets, they are one of the main parts of the game, in that they must be fed, given attention, played with, cleaned up after, and watched over.
In Pets, cats also have to be trained so they can live with Sims. The player can do this by scolding them if they don't want them to do something that is bad, e.g destroying furniture, or by praising them to continue doing it. Cats can be trained to be sloppy or neat. Cats may get up on tables to eat Sim food that is on them, unless they have been trained to prefer pet food or to stay off furniture.
The premade cats in The Sims and The Sims 2 are:
Waggles Kat, Boots Kat, Maggie Kat, Scout Kat, Mickey Kat, Faline Kat and Samantha Kat
Sims 3
Cats will return in the Expansion pack, The Sims 3: Pets.