Rhinoceroses in zoos play an important conservation role for critically endangered species, but meeting their space and behavioural needs in captive settings requires significant investment.
Rhinoceros welfare in captivity presents significant challenges that differ substantially between species. White rhinos — relatively social, with lower territorial aggression — can be housed in compatible groups that provide social stimulation and reduce enclosure-related behavioural deterioration. Black rhinos — solitary and highly territorial — require individual management that makes it difficult to provide the social enrichment that benefits most mammal species in captivity. For both species, positive reinforcement training programs that enable voluntary cooperation with veterinary procedures have dramatically improved welfare by reducing the stress and risk of chemical restraint. The conservation case for maintaining captive rhino populations is strong; ensuring that conservation goals are pursued alongside individual welfare standards is the institutional challenge.