American Veterinary Medical Association (AVMA)
California Veterinary Medical Association (CVMA)
Animal Network
Growing Up With Pets
Humane Society of the United States
LA Zoo
PetFinder.com
Rancho Cucamonga Animal Shelter
San Diego Zoo

MEDICAL INFORMATION:
Animal Poison Control Center
Pet Diabetes
Pets and Parasites

DOG INFORMATION:
American Kennel Club (AKC)
DogChannel.com

CAT INFORMATION:
CatChannel.com
Cat Fancier's Association
Indoor Cat Initiative

TRAVEL RELATED:
Dogpark.com, the On-Line Site for Off-Leash Dogs!
Pets On The Go