Research on animal intelligence, problem-solving, and self-awareness informs welfare standards by revealing which species have the cognitive complexity to experience rich forms of suffering and wellbeing.
Animal cognition research provides an expanding empirical foundation for welfare considerations that were previously based primarily on philosophical argument. Each demonstration of complex cognition — self-awareness, episodic memory, metacognition, theory of mind — adds to the evidence that the inner lives of other animals are richer and more morally significant than traditional assumptions allowed. The welfare implications are not that cognitively complex animals suffer more than simpler ones in all respects, but that they may experience qualitatively different forms of suffering — boredom, frustration, social longing, anticipation of negative events — that simpler animals cannot. Understanding animal cognition also helps design better enrichment: environments that challenge cognitive capacities appropriate to the species produce better welfare outcomes than one-size-fits-all enrichment approaches.