Another free online word game is Letterbox.
If you want to exchange messages with other players, visit the Lexigame Forum.
The following sources have been useful in the creation of the Chihuahua word puzzle.
Chihuahua uses its own word list, compiled with the use of many resources, in particular:
Some of the sound effects in the puzzle were purchased from the SoundRangers library.
The chinchilla image on the 10-letter puzzle is adapted from the photograph by Salix at Wikimedia Commons, and is licensed under the same Creative Commons Attribution-Share Alike 3.0 Unported license as the original photograph. Follow the above link for details.
And thanks also to the many players of the Chihuahua puzzle who have given me valuable comments and suggestions.
Needless to say, none of the worthy authors listed above are responsible for anything wrong with the Chihuahua puzzle or website. All bugs, design flaws and the like are my own work.