Our scientific understanding of animal consciousness has advanced rapidly, with significant new evidence and frameworks reshaping how we understand which animals are likely sentient.
Animal consciousness research is advancing faster than welfare legislation and cultural attitudes can accommodate. The scientific consensus in 2026 is that a much wider range of animals than previously acknowledged are likely conscious and capable of suffering. This has profound welfare implications: if cuttlefish, fish, and possibly insects experience something, the scale of unaddressed welfare harm from fishing, aquaculture, and pest control is enormous. The appropriate response to scientific uncertainty is not to wait for certainty before acting, but to apply welfare consideration proportional to the probability and severity of sentience evidence.