The Canine Diversity Project

A. Selected Breeds of Canis familiaris

Note: The breeds listed here should not be regarded as having more or fewer problems with genetic diversity or disease than those not listed. Those familiar with other breeds are invited to submit appropriate links.
Border Collie
Caucasian Ovcharka
Chinese Shar-Pei
Clumber Spaniel
Golden Retriever
Icelandic Sheepdog
Lhasa Apso
Portuguese Water Dog
Poodle (Diversity in Poodles)
Rhodesian Ridgeback
Shetland Sheepdog
Shiloh Shepherd
Tibetan KyiApso
Tibetan Mastiff
Wire-Haired Pointing Griffon

North American Mixed Breed Registry

B. Other Canids - General

Wolves Coyotes Dingos
Molecular evolution of the dog family
Overview of the Canidae   (including extinct species)

C. Endangered species

African Wild Dog
Dhole   [Asiatic Wild Dog]
Ethiopian Wolf
Iberian Wolf
Mexican Wolf
Maned Wolf
Red Wolf   [AZA]
Red Wolf   [North Carolina Zoo]

D. Reintroduction projects

The Grey Wolf
The Mexican Wolf
The Swift Fox


E. Additional information on endangered species

Defenders of Wildlife Bagheera
AZA Conservation Programs AZA Species Survival Plans
Introduction to a Species Survival Plan

Also worth visiting: The Golden Lion Tamarin captive breeding page.
Be sure to take a look at the "Pedigree Game".