This isn't strictly true, because the original versions did have comments in - it was just that we didn't have time before release to make sure those comments were actually suitable for a public audience (little kids really do hate to hear us swearing).
Well, suffer no more because on this page you will find a link to download the exact same COS files but this time with any comments left in them. They've all been classed as PG rating and should cause no offense to anyone :-)
The amount of commenting in the files varies from agent to agent (and author to author), just because they are in this ZIP doesn't guarantee that the author actually made the effort to comment their code!
NOTE: These COS files are for the latest version of Creatures 3 (C3 with Update 2 patch applied). Earlier versions may not be completely compatible.