Which wildlife conservation advertising campaign famously used the tagline "When the buying stops, the killing can too" to combat illegal wildlife trade?

Conservation organizations use creative advertising to raise awareness for endangered species and habitats. These campaigns can significantly impact public perception and funding for wildlife protection efforts. Test your knowledge about one of the most influential wildlife conservation advertising campaigns that changed how people viewed endangered species protection.

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WildAid's campaign featuring Jackie Chan, Yao Ming, and other celebrities
World Wildlife Fund's "Extinction Is Forever" campaign
National Geographic's "Photo Ark" campaign
The Nature Conservancy's "All Creatures Great and Small" initiative