National Bird Feeding Society
- A non-profit organization providing a no-nonsense approach to making bird feeding better for people and the birds.
- http://www.wildbird.com/content/nbs.index

Spay/Neuter Programs
- Listing of programs that provide low cost or free spay and neuter for cats offer within the US. Organized by state.
- http://www.lovethatcat.com/spayneuter.html

Angel Animals Educational Foundation
- Nonprofit, charitable organization dedicated to educating people about animals.
- http://www.angelanimals.net/

WellPetUSA
- Nonprofit, volunteer-based pet welfare organization focused on solving the pet overpopulation problem and educating humans on the care and welfare of domestic cats and dogs, and raising money for The Meow Bow Wow Fund.
- http://www.wellpetusa.org/

Maddie's Fund
- Offers grants to no-kill animal shelters that work with community collaborations of veterinarians, rescue groups, traditional shelters and animal control agencies nation wide. Details of grant guidelines and how to donate.
- http://www.maddiesfund.org/

Animal Welfare Institute
- laboratory animals, wildlife and farm animals. What's new, aims and programs, publications and membership information provided.
- http://www.awionline.org/

Vest A Dog
- Nationwide campaign donates bullet-proof vests for police dogs to law enforcement agencies throughout the states.
- http://www.dogvest.com/

Avian Welfare Coalition
- Works to prevent the abuse, exploitation, and suffering of captive birds, and address the issues of rescue, placement, and sanctuary for displaced birds. List of participants, articles, news, and downloadable flyers and factsheets.
- http://www.avianwelfare.org/

Concern for Helping Animals in Israel
- Nonprofit organization formed in the USA to assist the Israeli animal protection community.
- http://chai-online.org/

Humane USA PAC
- Political action committee devoted to the task of electing humane-minded candidates to public office at the federal and state levels.
- http://www.humaneusa.org/

Homeless Pets
- Articles and resources provided by Suite101.com.
- http://www.suite101.com/welcome.cfm/homeless_pets

Prevent a Litter Coalition
- National and community collaborative effort towards eliminating homeless pets.
- http://www.palc.org/

WSPA Americas
- Describes the aims, ideals, programs, and recruitment efforts of the US arm of an international organization promoting animal welfare and global conservation.
- http://www.wspa-americas.org/

Responsible Pet Owners Association
- A coalition of concerned pet owners and all-species pet clubs located in Texas. Provides information and assistance concerning animal welfare and public health issues.
- http://rpoa.home.texas.net/index.html

Voices For Pets
- Non-profit organization which tracks animal abuse cases through the courts, advocating for victimized pets and animals.
- http://www.voicesforpets.org/

Molly's Militia
- An organization of volunteers dedicated to rescuing abused and neglected animals from shelters, but they will try to help any animal in need.
- http://www.mollysmilitia.org/

Bernice Barbour Foundation, Inc.
- Private foundation which funds programs that directly benefit animals in the United States.
- http://www.bernicebarbour.org

Wildlife Land Trust
- Protects and preserves habitat for wildlife and provides sanctuary for wildlife by prohibiting commercial and recreational hunting and trapping. Affiliate of The Humane Society of the United States.
- http://www.wlt.org

Responsible Dog Owners of the Western States
- Nonprofit group which promotes responsible ownership and treatment of dogs. Fights legislation that undermines dog owner's rights.
- http://www.povn.com/rdows/

Pets 911
- Resource for disaster and recovery, cruelty investigation, rescue, lost and found, and legal reference.
- http://www.pets911.org

Humane Society of the United States
- Includes descriptions of public-awareness campaigns, programs, legislation, activist alerts, and educational publications.
- http://www.hsus.org/

Morris Animal Foundation
- Improves the health and well-being of companion animals and wildlife by funding humane health studies and disseminating information about these studies.
- http://www.morrisanimalfoundation.org/

Defenders Of Animals
- Providing assistance to sick, injured and homeless animals and to defend the inalienable rights of both companion animals and wildlife through education, legal and legislative activism.
- http://www.defendersofanimals.org/

IMOM, Inc.
- Nonprofit organization for sick, injured and abused companion animals, the prevention of cruelty, and public awareness and education.
- http://www.imom.org

Animal Abuse Prevention Agency
- Services cover educating pet owners, pet adoptions, pet rescue, veterinarian services when needed, working for the enforcement of animal rights and providing temporary care for pets without a home.
- http://www.animalapa.org/

SPAY/USA
- A nationwide network to provide affordable spay/neuter programs. Referrals, newsletter, articles, and advocacy.
- http://www.spayusa.org/

National Association for Humane and Environmental Education
- Provides information about KIND (Kids In Nature's Defense) News, a classroom newspaper for children, links to humane education resources, info about teacher-training opportunities, and facts on NAHEE's award programs.
- http://www.nahee.org/

The Progressive Animal Welfare Society
- PAWS advocates for animals through the operation of a companion animal shelter, a wildlife center, and an advocacy department.
- http://www.paws.org/

Doris Day Animal League
- Nonprofit, national lobbying organization formed to focus attention on issues involving the humane treatment of animals.
- http://www.ddal.org/

American Humane Association
- National organization involved in identifying and preventing the causes of child and animal abuse and neglect.
- http://www.americanhumane.org/