Animal welfare law has expanded dramatically over the past 50 years, but significant gaps remain in coverage, enforcement, and the species and systems protected.
Animal welfare legislation is the structural backbone of welfare protection at scale, translating scientific evidence and ethical consensus into enforceable minimum standards. Progress over the past half-century has been real: EU bans on battery cages, gestation crates, and calf veal crates have improved welfare for hundreds of millions of animals annually. Yet significant gaps persist: wild animals remain largely outside welfare law frameworks; most invertebrates are excluded; and enforcement capacity in many countries is insufficient to make existing law meaningful. The most impactful advocacy priority is not necessarily new legislation but enforcement of existing law — combined with targeted campaigns for the most significant gaps, particularly farmed fish welfare, wild animal suffering, and international trade standards that could raise welfare floors globally.