The Kookith is a Petpet released on July 14, 2001. They are rectangular in shape and very loyal. They have large ears and four feet. They star in their own game, Kookia. A Kookith runs the Petpet Lab Ray.
As of November 2008, the Kookith comes in 26 different colours:
- The Snow Kookith was an Advent Calendar gift. In order to protect the Kookith's value, it can not be painted. It is also retired.
- The Pirate Kookith was chosen for Week 159 of the Petpet Protection League and the Christmas Kookith was chosen for Week 430.
- There is also a Winged Kookith. It is a white Kookith with feathery wings and it is facing right instead of forward. The features that would be blue on a normal Kookith are gray. It was a Games Master Challenge prize.
- There are 17 items that feature Kookiths but are not Kookiths.