| Animal Welfare Institute | | Non-profit charitable organization founded in 1951 to reduce the sum total of pain and fear inflicted on animals by humans. Site includes information about programs, publications, and news. |
| Animals Without Frontiers | | International animal and nature organization. News, petitions, campaigns, and an Internet based animal identification system. |
| Born Free | | International wildlife charity working to prevent cruelty and alleviate suffering. News, educational materials, photos, FAQ, and information about ways for individuals to become involved. |
| Care For The Wild | | International wildlife charity dedicated to protecting animals from cruelty and exploitation. Includes fact sheets, news, information about current projects, and an online shop. |
| Companion Animal Welfare Council | | Conducts and publishes independent research and studies studies into the welfare, care, and treatment of companion animals and their role within society. |
| United Animal Nations | | A national non-profit animal advocacy organization whose mission is to protect animals in danger or need and to focus global attention on their plight to create a more humane world. |
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