Canadian Veterinary Medical Association
http://canadianveterinarians.net

Ontario Veterinary Medical Association
Pet health and pet related information from the O.V.M.A for pet owners. 
www.ovma.org
 
The College of Veterinarians of Ontario C.V.O.
The C.V.O. regulates the practice of veterinary medicine in Ontario.
http://www.cvo.org/
 
American Veterinary Medical Association A.V.M.A.
U.S based veterinary information.
www.avma.org

The American Animal Hospital Association
www.aahanet.org