Mice are one of the many species a player can make in Tooniversal Studios. They are the smallest Toons in the game, and make squeaking sounds when they talk. Mice were one of the original six species creatable in Disney's Toontown Online.
When Mice say something that isn't whitelisted in the Speedchat+ dictionary, it will be replaced with squeak, squeaky, squeakity. Unlike the rest of the species, Mice only have two head types for players. Alongside rabbit toons, they do not have a muzzle.
Notable NPC mice include Franz Neckvein, Daffy Don, Sticky Lou, Julius Wheezer, Clumsy Ned, Baker Bridget, and Shelly Seaweed, who are all SOS Cards that can be obtained in the VP.