Sun bears are the smallest bears species and are among the most active and intelligent, requiring substantial cognitive enrichment, climbing structures, and forest-like environments in captivity to prevent the severe stereotypic behaviours common in inadequate facilities.
Sun bear welfare in captivity varies enormously between facilities. In high-welfare settings like BSBCC, sun bears live in forested enclosures where they climb, forage, and express their full behavioural repertoire — their welfare is genuinely positive. In poor facilities including bile farms, sun bears endure some of the worst suffering inflicted on any captive animal: permanent catheters, small cages, chronic pain, and complete sensory deprivation. The gulf between these extremes illustrates the critical importance of welfare standards in bear facilities. For zoo-held sun bears, the welfare priorities are naturalistic climbing opportunities, complex foraging enrichment including honey extraction challenges, and appropriate solitary housing management that respects their non-social nature.