American Association of Feline Practitioners  The AAFP is like the American Medical Association for cat doctors, and has lots of good information regarding feline health.

American Veterinary Medical Association  This site is a good starting point to learn more about a variety of topics, including feline injection-site sarcomas and the latest subjects in veterinary medicine.

Companion Animal Parasite Council  This is a non-profit organization of veterinarians and parasitologists dedicated to protecting your family and your pets from parasites and zoonotic disease.

Heartworm Society    Everything you ever wanted to know about heartworm disease can be found here! 

Maryland Veterinary Medical Association MVMA has been serving Maryland's veterinary community for more than 120 years. You'll find resources for both animal owners and veterinarians on this site.

Novartis Animal Health  This site is sponsored by Novartis, the makers of Sentinel, Interceptor and Program, and has useful information on heartworm prevention and flea control for pet owners.

Veterinary Information Network  VIN is the world's first and largest online veterinary community.