Here are just some of the many animal rights, welfare and wildlife organizations in existence today working hard on behalf of the animals…
Animal Rights
American Anti-Vivisection Society (AAVS): http://aavs.org/
American Legal Defense Fund (ALDF): http://aldf.org/
Farm Sanctuary: http://www.farmsanctuary.org/
Friends of Animals: https://www.friendsofanimals.org/
In Defense of Animals: http://www.idausa.org/
Last Chance for Animals: http://www.lcanimal.org/
Mercy for Animals: http://www.mercyforanimals.org/
National Anti-Vivisection Society (NAVS): https://www.navs.org/
People for the Ethical Treatment of Animals (PETA):
Vegan Outreach: http://veganoutreach.org/
Animal Welfare
Animal Welfare American Humane Association: http://www.americanhumane.org/
Animal Place: http://animalplace.org/
American Society for the Prevention of Cruelty to Animals
(ASPCA): https://www.aspca.org/
Best Friends: http://bestfriends.org/
Doris Day Animal League: http://ddal.org/
Humane Society International: http://www.hsi.org/
Humane Society of the U.S. http://www.humanesociety.org/
International Fund for Animal Welfare: http://www.ifaw.org/united-states
National Humane Education Society: https://www.nhes.org/
PetSmart Charities: https://www.petsmartcharities.org/
SPCA International: https://www.spcai.org/
Wildlife
Born Free USA: http://www.bornfreeusa.org/
Defenders of Wildlife: http://www.defenders.org/
The Elephant Sanctuary: https://www.elephants.com/
Fund for Animals: http://www.fundforanimals.org/
Jane Goodall Institute: http://www.janegoodall.org/
Marine Mammal Center: http://www.marinemammalcenter.org/
National Audubon Society: https://www.audubon.org/
National Wildlife Federation: http://www.nwf.org/
Save the Chimps: http://www.savethechimps.org/
Sea Shepherd Conservation Society: http://www.seashepherd.org/
World Wildlife Fund: https://www.worldwildlife.org/