Animal welfare science is advancing rapidly, with new understanding of animal sentience, pain, and emotional states reshaping how we think about our obligations to other species.
Animal welfare science is at an inflection point. Growing evidence for fish pain, crustacean sentience, and even invertebrate nociception is pushing the boundaries of species considered to warrant moral consideration. Neuroimaging and behavioural research is revealing the emotional complexity of farm animals including pigs and cattle, challenging industries built on assumptions of limited sentience. The shift toward positive welfare — asking not just whether animals are suffering but whether they are flourishing — is transforming welfare assessment. Artificial intelligence tools are enabling automated welfare monitoring at scale. The convergence of welfare science, conservation biology, and environmental ethics is producing new frameworks for thinking about our obligations to billions of wild animals. The future of animal welfare science holds transformative potential for how humanity relates to other species.