Which wildlife conservation organization pioneered the 'Adopt an Animal' product subscription model that revolutionized conservation merchandise?

The animal conservation industry has seen remarkable product innovations aimed at protecting endangered species while engaging consumers. Many companies have launched products that contribute directly to conservation efforts, using innovative packaging, subscription models, and marketing techniques to raise awareness and funds. Test your knowledge about a groundbreaking wildlife product launch that changed how conservation merchandise is marketed and sold.

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World Wildlife Fund (WWF)
The Nature Conservancy
Wildlife Conservation Society
National Wildlife Federation