Littlest Pet Shop: Jungle
Enter LPSTRU as a password to unlock the Giraffe for purchase at the Meow Market for 0 Kibble.
rcyayln lft t, r si, gwfd, s
This game will tell you that you have your last pet when it says 20/21 on your adoption list. To get the last animal, make sure you have bought and unlocked everything. You will then get to buy a new pet.