Sheep have been consistently underestimated cognitively — research reveals memory, emotional recognition, and social complexity that inform their welfare needs.
The cognitive complexity of sheep has been dramatically underestimated, with consequences for how their welfare needs are understood. Long-term facial recognition of both conspecifics and humans, emotional face discrimination, and indicators of depression-like states in isolation all point to cognitive capacities that make social stability, familiar social groups, and enriched environments welfare necessities rather than luxuries. Management practices that repeatedly disrupt social groups, isolate individuals, or ignore sheep behavioral and emotional needs impose welfare costs that are now scientifically documented. The welfare science on sheep cognition provides a strong evidence base for improved standards.