Which wildlife conservation organization first pioneered the popular 'Adopt an Animal' subscription model that has since been replicated worldwide?

The conservation of endangered species and natural habitats has evolved significantly in recent decades, with innovative funding models helping to sustain critical protection efforts. Subscription-based conservation programs have emerged as a powerful tool for organizations to secure consistent funding while engaging supporters in meaningful ways. Test your knowledge about these modern conservation business models that are helping to protect our planet's biodiversity.

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