Codes are bonuses that reward the player with Gems or items. They can be found in the National Geographic Kids Magazine and Almanac/Infopedia, and are occasionally featured on the Daily Explorer. Other ways codes are distributed are from the Jam-A-Grams AJHQ sends on special occasions, such as holidays. Each code may only be used once, and both non-members and members alike are able to use codes.
Players have three ways in which they may enter codes. The first way is by going to Animal Jam's home screen and selecting the box next to "I Have a Code to Enter!", thus enabling a text box where the player may enter their code in. However, the player cannot be logged in, as the box is only visible when the player log in is showing. The second way is by entering the code on Animal Jam's "redeem your code" page, where the player will then be taken to a page that confirms whether or not the code will be applied to the player's account. If the player is logged off, they will need to sign in again. The third method is to simply click on the "Enter Code" button located inside the My Settings menu while playing in-game.