African Wild Dog Conservancy

Ape Alliance

Bat Conservation International, Inc

Bat Conservation Trust

Born Free Foundation

Cat Action Treasury

Dormouse Hollow

Foundation for the Protection and Preservation of the Przewalski Horse

Gorilla Organization

GRASP, the UN Great Apes Survival Project

International Gorilla Conservation Programme

International Otter Survival Fund

Mammal Society

Orangutan Foundation

People's Trust for Endangered Species

Save the Rhino International

Sea Mammal Research Unit

Seal Conservation Society

Sirenian International

UK Rhino Group

Ultimate Ungulate Page

Walker's Mammals of the World

Whale and Dolphin Conservation Society (WDCS)

Wild Camel Protection Foundation