The Angry Parrot
http://www.theangryparrot.org/

Avian Protection Society
http://avianprotectors.homestead.com/

AWC's Pet Shop Watch
http://www.avianwelfare.org/action/petstorewatch/index.htm

Companion Animal Protection Society (CAPS)
http://www.caps-web.org/

HelpingAnimals.com
http://www.helpinganimals.com/

The Humane Society of the United States
http://www.hsus.org/

IMOM.org
http://imom.org/

In Defense of Animals
http://www.idausa.org/

Little Shop of Sorrows: Stories of Animal Suffering in US Pet Shops
http://www.api4animals.org/a5a_petshops.php

Michigan State University College of Law: Animal Legal & Historical Web Center
http://www.animallaw.info/topics/spusretailpetstores.htm

New Jersey Consumers Against Pet Shop Abuse (NJCAPSA)
http://www.njcapsa.org/

NoPuppyMills.com
http://www.nopuppymills.com

Pet-Abuse.com
http://www.Pet-Abuse.Com

Pet Industry Joint Advisory Council (good info for pet store employees and owners)
http://www.pijac.org/

Pet Shop Laws
http://www.api4animals.org/b4a1_petshoplaws_state.php

Pet Trade Information and Activism
http://www.anapsid.org/pettrade/index.html

Prisoners of Greed
http://www.prisonersofgreed.org

StopPuppymills.org
http://stoppuppymills.org/

The USDA's Animal Care Page
http://www.aphis.usda.gov/animal_welfare/index.shtml