Hope the cages are clean, as a playable Zoo Tycoon 2 demo is now available, allowing the chance to build your fortune in the high-stakes zoo business. The demo features a portion of the full game, including four species of animal. The 120 MB download is available on Yahoo! Games Domain and mirrored on 3D Gamers, Boomtown (registration required), FileFront, Gameguru Mania, Gamer's Hell, Loadedinc, and Worthplaying.