American Veterinary Medical Association
http://www.avma.org/

National Animal Poison Control Center
(888) 426-4435
http://www.napcc.aspca.org/

American Animal Hospital Associations
(800) 883-6301
http://www.healthypet.com/

A.S.P.C.A.
(212) 876-7700
http://www.aspca.org/

Humane Society of the U.S.
(202) 452-1100
http://www.hsus.org/

Pet Finders
(800) 666-5678
http://www.petfinders.org/