Dog Clubs:

ASCA
CKC
AKC
USASA
United Kennel Club

Rescue Information:

Aussie Rescue Site
ARPH - Aussie Rescue & Placement Helpline, Inc.
STAAR - Second Time Around Aussie Rescue, Alberta Chapter
Breed Rescue Book - Sheila Boneham
Purebred Rescue Information - Sheila Boneham
Canadian Canine Rescue Network

Aussie Health & Genetics:

The Dog Genome Project
Basic Body Colors of Australian Shepherds
Inheritance of Color in Australian Shepherd Dogs - Lisa McDonald

Agility:

Agility Association of Canada
Agility-L
Agility Ability
The Dog Agility Page
Agility Magazine

Conformation:

INFODOG
Virtual Dog Show
Show Dogs West
Western Dog Shows
Jack Onofrio Dog Shows, L.L.C.

Flyball:

Flyball Home Page
The British Flyball Association - Home Page

Frisbee:

Freestyle Frisbee
Dog Disc Information
Mary Jo's Frisbee® Dog Page
Frisbee Dog Club - National Capital Air Canines Homepage

Herding:

The International Herder
AHBA - American Herding Breed Association

Obedience:

The Obedience Home Page
The Dog Obedience and Training Page
Canine Freestyle Federation

Service Dog Information:

Canadian Guide Dogs For The Blind
Dogs For The Deaf Inc.

Tracking:

The Tracking Page

Other dog related sites:

Doggies@thenet - a wonderful, informative site done by Soo Jin Koh, a 12 year old girl in Japan!
Dog Zone
Dog World - lots of great information!
The Poop - a wonderful rescue database as well as photo contests & great articles about dogs
Caleb's Corner - GREAT dog stories & poems
Terry Oronato's beautiful poetry
Calabria Aussies - Build your own grooming tables, etc.
Helix's Agility Equipment - how to build your own!
Canine Equipment - for the very best designed training collar I've found plus other wonderful canine products! A Canadian Company!
Petpro - Lot's of Aussies products!
SitStay GoOut Store - HTML pedigree generator & good products!
Purina Pet Care Centre
Obedience with AnnMarie Silverton
Obedience with Karen Pryor
Recipes for dog treats
Three Dog Bakery

Canine search engines:

Open Directory Project
workingdogweb.com
The Directory Of Dog Web Sites
petdir.com search engine
doginfo.com
petdir.com search engine
dogomania.com
dogpages.net
DogInfo
puppyface.com

Canine Health:

Emergency Info Links - an EXCELLENT resource page!

Guide to Genetic Diseases in Dogs
UC Davis School of Veterinary Medicine
Veterinary Ophthalmology Services
American Society of Veterinary Ophthalmology
Importance of Complete Pedigrees
Immune System & Disease Resistance
The Canine Diversity Project
Hereditary Defects in Australian Shepherds
Herpes Infection in Dogs
CEA & I - a paper on Collie Eye Anomoly - C.A. Sharp
OFA - Searchable database for certified dogs
CERF
Health Gene Corporation - Infectious Conditions Associated With Loss Of Pregnancy In The Bitch (and other DNA info)
VetInfo - one of the most complete lists of Veterinary information that I've found!
NetVet Veterinary Resources
VetGen Genetic Information
AltVetMed - Complementary & Alternative Veterinary Medicine
AVAR's Guide to Genetic Diseases in Dogs
Canine Genetics & Health
American Veterinary Medical Association
Dog Genome Project - A scientific study of the chromosomes in dogs
Enclyclopedia of canine vet medical information
Canine vaccination schedule
Canine Health Concerns - variety of articles about Canine Health
The Immune System and Disease Resistance - W. Jean Dodds, DVM*
Canine Epilepsy & Thyroid Information