Links
Alley Cat Allies
American Animal Hospital Association
American Humane Association
American Society for the Prevention of Cruelty to Animals
American Veterinary Medical Association
Animal Behavior Society
Association of Pet Dog Trainers
Humane Society of the U.S.
Latham Foundation for the Promotion of Humane Education
National Association of Professional Petsitters
No Kill Advocacy Center
Petfinder
Pet Sitters International
The Animal Rescue Site