Animal Causes

PETA (People for the Ethical Treatment of Animals)
WWF (World Wildlife Fund)
IFAW (International Fund for Animal Welfare)
The African Wildlife Foundation
The Jane Goodall Institute
The Fund for Animals
Physicians Committee for Responsible Medicine
API (Animal Protection Institute)
IDA (In Defense of Animals)
ARF (Animal Rescue Foundation)
Defenders of Wildlife
The Wilderness Society
North Shore Animal League of America
Farm Sanctuary
The Marine Mammal Center
The Wildlife WayStation
Front Range Equine Rescue
Lifesavers, Inc.
Mountain Lion Foundation
Tiger Haven

Environmental Causes

NRDC (National Resource Defense Council)
The Sierra Club
Greenpeace
Sea Shepherd Conservation Society
Heal the Bay

Social Causes

Southern Poverty Law Center
The Simon Wiesenthal Center
N.O.W. (National Organization for Women)