These codes should work, but you can't be sure that the site won't change how it works. Good luck!

Kinzcash Cheat Code: Type the password 117yur5h when in the adoption center and then sign off right away. Wait a few hours, then once you sign in again you'll have more kinzcash, items, and pets.

Furniture Cheat Code: When you're in your room, press ctrl+m+g then log off. When you sign back in you should have every indoor furniture item in the w shop. You have to try it as soon as you get in the room. It takes some practice, and might not work right away.

Two Accounts at Once Cheat Code: If you have two accounts, use your friend phone, then type ctrl+n and you can use the two webkinz accounts simultaneously.