These links are all amazing (which is obvious given their main subject). I could gush about each one but I will just summarize each one a little.
This Book of Eric BurdonThis page has great pictures and a very thoughtful tribute to Burdon.
The BoatThis site has great information on Burdon's albums. Some of it is in Japanese last time I checked.
Henning and Brian's Unofficial Eric Burdon PageLots of information and pictures. A very good bulliten board.
The Eric Burdon Connection NewsletterLots of current information. A very offical site.
The Animals GalleryA great page with original photos. I posted one of his on my site. Don't worry, it is credited to his page.
The Official Eric Burdon PageThis official site I believe came from a collaboration of Aimee Harrison (This Book of Burdon) and the famous Phil of the Newsletter. It is great, but what else could you expect from Aimee and Phil?