Which innovative packaging design was first introduced by a major wildlife conservation organization in 2015, later becoming an industry standard for animal-related retail products?

Sustainable packaging has become increasingly important in the animals and wildlife product industry. Companies selling pet supplies, bird feeders, wildlife conservation merchandise, and animal care products have been innovating to reduce environmental impact while maintaining product integrity. This trivia question explores a significant packaging innovation that changed how wildlife and animal products are marketed and sold while supporting conservation efforts.

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Mushroom-based mycelium packaging for bird feeders and nest boxes
Recycled plastic ocean waste containers for pet supplies
Seed-embedded paperboard that grows into wildlife habitat
Edible packaging made from animal-safe vegetable proteins