American Animal Hospital Association (AAHA) This is another large national veterinary organization with several pet owner sites for information and fun!
American Veterinary Medical Association (AVMA) This is the largest veterinary organization in the United States and this site has an abundance of information about veterinary medicine for the veterinarian and for the pet owner.
American Cat Fanciers Association
Complementary and Alternative Veterinary Medicine
Future Farmers of America (FFA)