Other
American Rare Breed Association
Gives a list with links to Rare Breeds of dogs not recognized by the AKC. Links give descriptions (and in most cases,) pictures of the dog you click on. Fun and interesting!
Other
Todo Perros
A good place for Spanish speakers to find everything related to dogs. Topics run the gamut: dog sports, dog cemeteries, breeders, pictures, veterinary medicine, dog care, and dog products, ads, and shops.
Canis Major Publications
Dog Owner's Guide: Breed Profiles
Articles about many different dog breeds. Each gives an in-depth look at its characteristics, temperament and such. Great resource!