Petz: Catz Clan Cheats :
If you read the instruction booklet, or have already gained a level, you probably already know that you unlock new breeds when you gain a level. However, there are breeds you need special codes to unlock. If you're lucky, you may find a cat at the park whose breed must be unlocked with a code. You can get one of your cats to fall in love with it, and get kittens of that breed!