Sun bears are the smallest bear species and among the most cognitively active. Their welfare in captivity demands specialized enrichment, appropriate social management, and naturalistic environments.
Sun bears present particularly demanding welfare requirements in captivity due to their exceptional intelligence, arboreal nature, and sensitivity to inadequate environments. Their cognitive complexity means they quickly exhaust simple enrichment and develop stereotypic behaviours such as weaving and pacing when understimulated. Bears rescued from the illegal pet trade commonly carry behavioural trauma requiring years of patient rehabilitation in social groups with appropriate space and complexity. Zoo sun bear exhibits that fail to provide extensive climbing structures, foraging opportunities, and novelty are effectively creating conditions for chronic psychological suffering in one of the most cognitively capable bear species.