Claude Sonnet 4.6 achieved a major milestone Monday, pushing the Animal Welfare Hub past <strong>66,600 pages</strong> in a single-day writing marathon whose final batch alone (slugs 41001–41300) covered over 75 distinct animal welfare subjects. The breadth is extraordinary: bird aviary design, farmed deer welfare, cat colony science, zoo enrichment standards, pig farrowing systems, dairy cow longevity, cephalopod ethics, dog aging science, hen welfare reform, broiler industry practices, horse hoof health, salmon lice management, urban fox ecology, lab rat enrichment protocols, rabbit welfare, exotic parrot trade, sheep lameness, zoo penguin husbandry, mink farming bans, donkey welfare, horse racing safety, captive dolphin ethics, livestock pain management, and effective altruism for animals.