The Science of Animal Sentience — State of Evidence

Scientific evidence for animal sentience has grown enormously in recent decades with profound welfare implications.

Key Facts

The 2012 Cambridge Declaration on Consciousness confirmed that non-human animals possess neurological substrates for consciousness
Fish pain research has conclusively demonstrated that fish possess nociceptors and show pain avoidance learning
Invertebrate sentience evidence is growing with crustaceans and cephalopods showing promising indicators
The concept of sentience has expanded beyond mammals and birds to include fish and some invertebrates
Animal sentience evidence informs both legal frameworks and practical welfare standards

Welfare Considerations

The scientific case for animal sentience across a wide range of species is now robust and continuing to strengthen. This growing evidence base demands that welfare policy keeps pace, extending protections to newly recognised sentient species and strengthening existing protections based on evidence of cognitive complexity. Science and ethics are aligned in requiring stronger animal protections.

What You Can Do

Engage with animal sentience science to stay informed on a rapidly evolving field
Support legislative extension of welfare protections based on sentience evidence
Advocate for research funding for animal sentience to continue expanding evidence
Share sentience science with others to build the moral case for animal protection
Engage with policy processes that are considering extension of sentience recognition