Reptiles in zoo collections have specific thermoregulation, UV lighting, and habitat complexity needs that must be met to ensure physiological and behavioural welfare.
Reptile welfare in zoo collections is strongly determined by the physical environment provided. As ectotherms, reptiles cannot regulate their body temperature independently — correct temperature gradients across their enclosure are essential for immune function, digestion, reproduction, and behaviour. Inadequate UV-B provision causes metabolic bone disease — a painful, debilitating condition from vitamin D3 deficiency — that was historically widespread in zoo reptile collections and remains a problem in inadequate facilities. Behavioural complexity through appropriate substrate, hiding places, climbing structures, and foraging enrichment addresses psychological welfare. Well-designed reptile exhibits that meet these needs demonstrate welfare that is achievable with the right knowledge and commitment.