Which conservation organization first used an endangered animal species as its logo, creating one of the most recognizable brand symbols in environmental protection?

Conservation organizations often use powerful brand symbols to represent their mission and connect with supporters. These logos become recognizable worldwide and serve as visual shorthand for complex environmental causes. This trivia question tests your knowledge of one of the most iconic wildlife conservation brand logos and its fascinating history. Can you identify which organization pioneered this approach to conservation branding?

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World Wildlife Fund (WWF) with the giant panda in 1961
National Audubon Society with the great egret in 1953
The Nature Conservancy with the oak leaf in 1951
Sierra Club with the sequoia tree in 1948