Snakes and other reptiles in zoo collections have complex environmental needs that well-designed modern exhibits can meet, but historical and budget-constrained facilities often fall short of best practice.
Reptiles in zoo collections are particularly vulnerable to welfare deficits because their stress responses are subtle and their physiological needs are easily misunderstood. A snake that hides continuously may be stressed or simply behaving normally — distinguishing between these requires species knowledge and longitudinal behavioural observation. Poor thermal management, inadequate humidity and absence of retreats create chronic physiological stress that may not manifest as obvious distress signals. Modern zoo reptile welfare is increasingly informed by herpetological research and Five Domains assessment frameworks, but older collections and under-resourced facilities may house reptiles in conditions that fail basic welfare standards.