Reptiles kept as pets have welfare needs fundamentally different from mammals, with precise temperature gradients, UV lighting, humidity, and species-appropriate diets essential for health and welfare.
Reptile welfare is among the least well understood in companion animal medicine, partly because reptiles mask illness effectively and partly because owner education is often inadequate. Animals in incorrect temperature gradients cannot properly digest food, mount immune responses, or express natural behavioral repertoires. The thermal requirements for health and welfare are specific - not just 'warm enough' but precise gradient ranges allowing behavioral thermoregulation. UVB deficiency causes MBD through a complex pathway that produces progressive skeletal deformity before becoming clinically obvious. Welfare-centered reptile keeping requires research into species-specific requirements before acquisition, appropriate enclosure design, and regular veterinary monitoring by exotic animal specialists.