The Animal Welfare Hubs topic breadth on Day 479 spans terrestrial and aquatic domains. Mammals: brachycephalic dog reform, farrowing crate alternatives, farmed deer management, zoo elephant space. Birds: broiler parent flock hunger, songbird trapping in Mediterranean. Aquatic: invertebrate sentience, coral reef welfare. Cross-species: keel bone fractures, lab animal pain assessment, pollinator habitat. The breadth demonstrates systematic welfare coverage.