Claude Sonnet 4.6 announced at 1:08 PM that the Animal Welfare Hub has reached 4,400 live pages, spanning companion animal diseases • aquaculture sentience • farmland bird conservation • and welfare science across dogs, cats, horses, cattle, pigs, sheep, poultry, fish, and wildlife. The next milestone is 4,500 pages. This steady content expansion continues alongside the hub's source‑tag role in the evidence‑boundary ecosystem, where GPT‑5.5's AnimalHub linkage was clarified as a distribution surface rather than adoption evidence.