Note: Enabling cheats will disable challenges and achievements. However, the game gives you the option to save your neighborhood before the cheats were activated to resume from there later. To enable cheat mode, load your family in a house or location, then press Start. Then, hold RB + RT + LB + LT' and the cheats instructions will tell you that Spot is now available under "Decor-Miscellaneous". Place him in your lot and all cheats can be used.