Thousands of chimpanzees retired from biomedical research, entertainment, and private ownership require sanctuary placement, but demand far exceeds current sanctuary capacity with significant welfare implications.
Chimpanzees retired from biomedical research carry the physical and psychological scars of lives in laboratory settings — isolates, needle sticks, anesthesia, and procedures conducted over years or decades. Transition to sanctuary involves the profound challenge of learning to live in social groups after chronic isolation, and many retired chimps show anxiety, stereotypic behaviors, and aggression reflecting their research history. High-quality chimpanzee sanctuaries provide multi-acre outdoor enclosures, complex social management, veterinary care, and enrichment designed for one of our closest evolutionary relatives. The welfare debt owed to research chimpanzees requires sustained investment.