Anthropomorphic animal characters created by furry fans, known as fursonas,[22] are used for role-playing in MUDs,[23] on internet forums, or on electronic mailing lists.[24] A variety of species are employed as the basis of these personas, although many furry fans (for example over 60% of those surveyed in 2007) choose to identify themselves with carnivorans.[25][26] The longest-running online furry role-playing environment is FurryMUCK, which was established in 1990.[27] Many furry fans had their first exposure to the fandom come from multiplayer online role-playing games.[28][unreliable source?]