I remember I got the Sonic 2 demo for the Dreamcast, and the opening song was pretty awesome. When I played the actual game, it had the most horrendous lyrics added to it.
Sometimes I think Sonic Team does everything possible to make me hate this franchise.
"Chao are meant to be raised and taken care of in the same manner as with human babies. ... When Chao hatch, they crawl and are unable to swim. They get their nutrition from knocking the fruit off trees. When a Chao begins to grow up, it will eventually go into a cocoon stage in which it will transform." -Wikipedia again