Comparison between pets themed games

The Sims 2: Pets and The Sims 3: Pets share the same concepts, though there are significant differences.

Features in both

 * Cats
 * Dogs
 * Small pet

Features in TS2: Pets not in TS3: Pets

 * The ability to buy custom-made pets from pet stores. Tthere are no pet stores in the Sims 3. EA has released a pet store that is downloadable for free in the official store, but it still does not sell pets. Cats and dogs can only be gained through adoption, except for horses which can be both adopted or bought at the stable.
 * Werewolf (Creature)
 * Wolves and Pack Master
 * Pets can have a job in three different careers
 * Skunks

Features in TS3: Pets not in TS2: Pets

 * Horses
 * Unicorn (new creature)
 * Small pets
 * Turtles
 * Lizards
 * Snakes
 * Pets have traits
 * Wild animals
 * Shrews
 * Hedgehogs
 * Squirrels
 * Deer
 * Raccoons
 * Chincillas
 * Chipmunks
 * Pets have wishes
 * Racing (for Horses)
 * Pets have lifetime rewards
 * Sims can see and interact with ghost pets
 * New town to explore
 * Ability to control pets
 * Plastic Surgery
 * Ice Cream Truck
 * Equestrian Center
 * Ranches
 * Hug Pet Interaction
 * In The Sims 2: Pets, this interaction is only available with cats.