Which innovative retail product pioneered the 'adopt an animal' concept that has since become a standard conservation fundraising strategy worldwide?

Conservation retail has evolved dramatically in recent years, with organizations finding innovative ways to fund wildlife protection efforts through product sales. From subscription boxes that support endangered species to high-tech tracking devices that consumers can sponsor, the intersection of retail and wildlife conservation continues to grow. Test your knowledge about one groundbreaking retail innovation that revolutionized how we support animal conservation.

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WWF's Symbolic Animal Adoption Kits (1973)
National Geographic's Wildlife Watch Collection (1988)
Smithsonian Zoo's Guardian Animal Program (1982)
ASPCA's Wildlife Sponsorship Packages (1995)